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Grammatical Structure

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Question 561Question →

The chief safety auditor noted that although the pressure log recorded a sudden drop at midnight, the secondary safety seal remained undisturbed. Consequently, the team concluded that the technician _______ the warning light during the routine walkthrough. Which modal auxiliary phrase correctly completes the sentence to express a logical deduction about a past event?

Show answer & explanation

Answer: must have overlooked

Answer

The phrase 'must have overlooked' correctly completes the sentence to express a past logical deduction.
The phrase 'must have overlooked' is correct because the modal construction 'must + have + past participle' is used to draw a strong logical conclusion about an event in the past based on present evidence.

Step-by-Step Solution

1
Analyze the context of the sentence to identify the required modality.
The context provides physical evidence (undisturbed safety seal and pressure drop) leading to a logical conclusion about a past event.
Determining whether the sentence requires capability, obligation, permission, or past logical deduction guides modal verb selection.
2
Evaluate modal structures for past logical deduction.
Past logical deduction is constructed using the modal 'must' + 'have' + past participle of the main verb ('must have overlooked').
'Must' indicates strong certainty, and 'have + past participle' sets the action in past time.
3
Eliminate grammatically invalid structures.
Reject options that insert 'to' after modal verbs or combine two modal verbs together.
Modal auxiliary verbs do not take the full infinitive ('to') and cannot be stacked consecutively.

Key Concept

Modal Auxiliaries for Past Logical Deduction
Estimated Time:1m 0s
Question 562Question →

Which verb form correctly completes the sentence below?

'Had the parliamentary committee acted swiftly on the whistle-blower's disclosure, the agency ________ millions of naira from being misappropriated.'

Show answer & explanation

Answer: would have saved

Answer

The correct option is 'would have saved'.
The sentence begins with an inverted third conditional dependent clause ('Had the parliamentary committee acted...'). In standard English grammar, the main clause of a third conditional construction must use the modal perfect structure ('would have + past participle'). Therefore, 'would have saved' is the only grammatically correct option.

Step-by-Step Solution

1
Identify the clause structure of the sentence.
The dependent clause 'Had the parliamentary committee acted...' is an inverted third conditional clause standing for 'If the parliamentary committee had acted...'.
Recognizing inverted conditional structures is necessary to determine the correct tense and mood in the main clause.
2
Determine the required tense and aspect for the main clause.
A third conditional sentence expressing a hypothetical past condition requires 'would have + past participle' in the main (result) clause.
The event refers to a past unfulfilled possibility, which grammatically demands the perfect aspect combined with a past modal.
3
Select the matching option.
'would have saved' matches the required 'would have + past participle' pattern.
It maintains proper sequence of tenses and modal agreement across the sentence.

Key Concept

Inverted Third Conditional (Unreal Past)
Question 563Question →

In complex sentence structure, subordinating connectives of manner establish hypothetical conditions that govern the mood of the dependent clause. Which word correctly fills the blank to complete the sentence?

Fill in the blanks below

The newly appointed director addressed the board of trustees as he were entirely unaware of the severe financial deficit.
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Answer

The blank must be filled with either 'if' or 'though', forming the compound subordinating conjunction 'as if' or 'as though'.
The correct response requires 'if' or 'though' to complete the compound subordinating conjunction 'as if' or 'as though'. This conjunction introduces an adverbial clause of manner depicting an unreal or hypothetical situation. In formal English, hypothetical manner clauses take the subjunctive past tense verb 'were' regardless of whether the subject is singular ('he').

Step-by-Step Solution

1
Analyze the clause structure of the main sentence and the dependent clause.
The main clause is 'The newly appointed director addressed the board of trustees', and the dependent clause contains a subject ('he') and a subjunctive verb ('were').
Identifying the clause elements helps determine the category of conjunction required.
2
Determine the semantic relationship between the two clauses.
The sentence describes the manner in which the director spoke, implying a hypothetical or contrary-to-fact situation (indicated by the subjunctive 'were' with a singular subject 'he').
Hypothetical manner clauses require specific subordinating conjunctions that pair with 'as'.
3
Select the appropriate conjunction to pair with 'as'.
The conjunctions 'if' or 'though' combine with 'as' to form 'as if' or 'as though'.
'As if' / 'as though' correctly introduces an adverbial clause of hypothetical manner.

Key Concept

Subordinating Conjunctions of Manner and Subjunctive Clause Structure
Question 564Question →

Read the active sentence provided below and complete the corresponding passive sentence by filling in the blank with the appropriate verb phrase that preserves the exact tense, aspect, and modal meaning of the original statement. What is the correct passive verb sequence to complete the sentence?

Active: The defense ministry must have passed on the classified coordinates to the ground commanders.

Passive: The classified coordinates must {{blank_1}} on to the ground commanders by the defense ministry.

Fill in the blanks below

The classified coordinates must on to the ground commanders by the defense ministry.
Show answer & explanation

Answer

have been passed
The active sentence employs a modal perfect construction ('must have passed') followed by the phrasal verb particle 'on'. In transforming a modal perfect verb into the passive voice, the passive marker 'been' must be inserted between the auxiliary 'have' and the past participle 'passed', producing 'must have been passed on'. Because the modal 'must' and particle 'on' are already provided in the frame surrounding the blank, the exact missing verb sequence is 'have been passed'.

Step-by-Step Solution

1
Analyze the active verb structure and identify its constituent parts.
The active verb phrase is 'must have passed on', composed of the modal auxiliary 'must', the perfect infinitive 'have passed', and the phrasal verb prepositional particle 'on'.
Identifying the active verb structure is necessary to determine how to build the corresponding passive auxiliary chain without altering mood or tense.
2
Derive the passive construction for a modal perfect verb sequence.
The passive form of 'modal + have + past participle' is 'modal + have + been + past participle'. Applying this rule yields 'must have been passed'.
Converting an active modal perfect verb to passive voice requires introducing the passive auxiliary 'been' immediately before the main verb's past participle.
3
Match the derived passive verb sequence against the pre-filled template.
Since 'must' and 'on' are already present in the prompt frame, supplying 'have been passed' completes the passive sentence correctly as 'must have been passed on'.
Ensures no required auxiliary is omitted and no extraneous particles are duplicated.

Key Concept

Active and Passive Voice Transformation of Modal Perfect Phrasal Verbs
Estimated Time:1m 30s
Question 565Question →

Read the sentence below and identify the correct relative pronoun needed to complete the clause structure:

'The Vice-Chancellor commended the senior researchers, three of _____ received international recognition for their published studies.'

Which of the following options correctly fills the blank?

Show answer & explanation

Answer: whom

Answer

The word 'whom' correctly completes the sentence because it acts as the objective relative pronoun following the preposition 'of' when referring to human antecedents.
The correct choice is 'whom' because in formal clause structure, a relative pronoun governed by a preceding preposition ('of') referring to human beings ('researchers') must take the objective case form.

Step-by-Step Solution

1
Identify the antecedent and grammatical function within the relative clause.
The antecedent is 'senior researchers' (human), and the blank follows the preposition 'of'.
Prepositions require objective pronoun cases when introducing relative clauses.
2
Evaluate the case requirements of relative pronouns after prepositions.
The pronoun 'whom' is the objective case form for human antecedents, whereas 'who' is subjective, 'whose' is possessive, and 'which' applies to non-humans.
In quantificational structures like 'three of _____', the preposition governing the pronoun dictates the objective case 'whom'.

Key Concept

Relative Clause Connectors with Prepositions
Estimated Time:1m 0s
Question 566Question →

Which verb form correctly completes the sentence below in accordance with the rules of subject-verb concord?

Fill in the blanks below

Each of the new recruits assigned a dedicated mentor upon arrival at the training camp.
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Answer

The singular verb form 'was' (or 'is') is required because the indefinite pronoun 'Each' functions as the singular grammatical subject.
The sentence requires a singular verb because the subject 'Each' is a singular indefinite pronoun. Intervening prepositional phrases containing plural nouns like 'recruits' do not alter the singular agreement requirement.

Step-by-Step Solution

1
Identify the grammatical subject of the sentence
The head subject of the sentence is the indefinite pronoun 'Each'.
The prepositional phrase 'of the new recruits' acts as a modifier and does not determine the number of the subject.
2
Apply the subject-verb agreement rule for distributive indefinite pronouns
A singular subject requires a singular verb form ('was' or 'is').
Indefinite pronouns such as 'each', 'every', and 'either' take singular verbs regardless of any plural nouns in intervening prepositional phrases.

Key Concept

Indefinite Pronoun Concord
Question 567Question →

Complete the sentence below by supplying the grammatically appropriate verb form to express the correct tense and aspect.

Fill in the blanks below

The diplomatic envoy spoke about the cross-border negotiations as though he present during the closed-door proceedings, even though he had been recalled to headquarters weeks prior.
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Answer

had been
The verb form 'had been' is correct because the conjunction 'as though' introduces an unreal or hypothetical situation. In English grammar, when the main reporting verb ('spoke') is in the past tense, a counterfactual situation within that past timeframe must be expressed using the past perfect aspect ('had been').

Step-by-Step Solution

1
Analyze the main clause verb tense and temporal context.
The main clause verb 'spoke' sets the reference time in the simple past.
Identifying the primary time frame establishes the baseline for the sequence of tenses.
2
Identify the syntactic subordinator and its grammatical requirement.
The subordinator 'as though' introduces a counterfactual (unreal) state.
Conjunctions such as 'as if' and 'as though' require a tense backshift to signal hypothetical or contrary-to-fact conditions.
3
Determine the required tense and aspect for past counterfactual situations.
When the main clause verb is in the past tense ('spoke'), an unreal condition relating to that past timeframe requires the past perfect aspect ('had been').
Simple past forms ('was'/'were') express present unreal states relative to the narrative time, whereas past perfect forms ('had been') express past unreal states or events prior to the narrative time.

Key Concept

Unreal Past Aspect and Subjunctive Mood after 'As If / As Though'
Estimated Time:1m 30s
Question 568Question →

Direct Speech: "I have delivered the diplomatic dispatch to the minister today," the envoy stated.

Reported Speech: The envoy stated that he {{blank_1}} the diplomatic dispatch to the minister {{blank_2}}.

Which word forms correctly complete the reported speech clause above?

Fill in the blanks below

The envoy stated that he the diplomatic dispatch to the minister .
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Answer

The blanks should be filled with 'had delivered' for the first blank and 'that day' for the second blank.
When converting direct speech to indirect speech with a past-tense reporting verb ('stated'), the present perfect verb 'have delivered' backshifts to the past perfect 'had delivered', and the time adverb 'today' shifts to 'that day'.

Step-by-Step Solution

1
Examine the tense of the reporting verb in the direct speech context.
The main reporting verb 'stated' is in the past tense, requiring all verbs within the reported clause to undergo backshift.
Past-tense reporting verbs mandate tense backshifting for reported speech in formal English grammar.
2
Apply backshift rules to the verb phrase 'have delivered'.
The present perfect construction 'have delivered' shifts back to the past perfect form 'had delivered'.
Present perfect tense in direct speech changes to past perfect tense in indirect speech.
3
Convert the temporal adverbial 'today'.
'Today' changes to 'that day'.
Adverbs of time referencing the current day must shift to indicate the reported context relative to the time of speaking.

Key Concept

Direct and Indirect (Reported) Speech Transformation
Estimated Time:1m 0s
Question 569Question →

Complete the sentence below by supplying the grammatically correct form of the verb to show the proper sequence of past actions.

Fill in the blanks below

Long before the commission published its final report, the treasury officials all suspicious transactions.
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Answer

had audited (or another correct past perfect form like had investigated / had flagged / had frozen)
The time expression 'Long before' introduces a past reference point ('published'). An action that preceded this reference point must be expressed using the past perfect tense ('had audited') to convey completion prior to that past event.

Step-by-Step Solution

1
Analyze the temporal markers and sequence of events in the sentence.
The phrase 'Long before' indicates that the action of auditing/flagging transactions occurred and was completed prior to another past event ('published').
In English grammar, an action completed prior to a designated point in the past requires the past perfect aspect (had + past participle).
2
Formulate the correct verb structure.
Combine the auxiliary verb 'had' with the past participle of the main verb (e.g., 'audited').
This maintains appropriate sequence of tenses between the subclause and the main clause.

Key Concept

Past Perfect Aspect in Time Clauses
Estimated Time:1m 0s
Question 570Question →

Which pronoun correctly completes the sentence below in accordance with standard formal English rules of pronoun-antecedent agreement?

"Every member of the parliamentary committee, regardless of political affiliation, expressed _____ dissatisfaction with the proposed fiscal bill."

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Answer: his or her

Answer

The pronoun that correctly completes the sentence is 'his or her'.
The sentence requires a singular possessive pronoun to agree with the grammatically singular subject antecedent 'Every member'. In standard formal English, 'his or her' maintains precise agreement in both number and gender for human antecedents.

Step-by-Step Solution

1
Identify the antecedent of the missing pronoun.
The subject head noun is 'member', modified by the singular quantifier 'Every'.
The intervening phrase 'of the parliamentary committee, regardless of political affiliation' does not alter the grammatical number of the true subject head noun.
2
Determine the grammatical number and person required for the pronoun.
A third-person singular possessive pronoun is required.
'Every member' denotes individuals evaluated singular by singular.
3
Select the option that provides a singular third-person possessive pronoun suitable for human subjects.
'his or her' correctly fulfills all grammatical agreement requirements.
In standard formal examination English, 'his or her' is used to agree with singular gender-neutral human antecedents.

Key Concept

Pronoun-Antecedent Agreement with Singular Indefinite Qualifiers
Question 571Question →

Which of the following options correctly completes the sentence below?

"It is high time the students ________ preparing for their final examinations."

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Answer: started

Answer

The correct option is 'started'.
In standard English grammar, the phrase 'it is high time' followed by a subject noun or pronoun requires a verb in the simple past tense ('started'). This structure expresses the subjunctive mood, signaling that an expected action is overdue.

Step-by-Step Solution

1
Identify the key grammatical expression in the sentence structure.
The sentence begins with the idiomatic expression 'It is high time' followed by a subject ('the students').
In English grammar, 'it is high time' or 'it is time' + subject triggers the unreal past subjunctive construction.
2
Select the verb form that corresponds to the unreal past rule.
The verb form 'started' (simple past) correctly fills the blank.
Although the action refers to present or immediate future necessity, the past tense form 'started' must be used.

Key Concept

Unreal Past Subjunctive Mood after 'It is high time'
Question 572Question →

Fill in the blank with the grammatically correct verb form to complete the sentence in line with the rules of concord.

Fill in the blanks below

During the final stage of the trial, the jury divided in their individual assessments of the forensic evidence.
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Answer

The correct verb form to complete the sentence is 'were'.
The verb 'were' is correct because the sentence invokes the principle of notional concord (noun of multitude). The clues 'their' and 'individual assessments' show that the members of the jury are acting independently rather than as one unified entity.

Step-by-Step Solution

1
Identify the subject of the sentence and determine its grammatical nature.
The subject is the collective noun 'the jury'.
Understanding whether the collective noun operates as a unified body or as individual members determines verb agreement.
2
Analyze contextual clues in the sentence to determine if the collective noun acts individually or collectively.
The presence of the plural possessive pronoun 'their' and the phrase 'individual assessments' indicates that the members are acting separately.
Under the rule of notional concord (noun of multitude), when members of a collective noun act as individuals, a plural verb is required.
3
Select the correct tense and number for the verb.
The past tense plural auxiliary verb 'were' correctly completes the sentence.
'Were' matches the past context of the trial and agrees in plural number with the individual members of the jury.

Key Concept

Noun of Multitude / Notional Concord
Estimated Time:1m 0s
Question 573Question →

Complete the sentence below by supplying the appropriate degree modifier in the blank space provided.

Fill in the blanks below

The newly proposed infrastructure development plan is superior to the previous draft in terms of cost-effectiveness and environmental sustainability.
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Answer

far (or much)
The adjective 'superior' is a Latin comparative word that inherently conveys a comparative degree and pairs with the preposition 'to'. To intensify or emphasize the degree of a comparative adjective, English grammar rules require degree adverbs such as 'far' or 'much'. Either 'far' or 'much' fits naturally and accurately in the context.

Step-by-Step Solution

1
Identify the part of speech and grammatical nature of the target word being modified.
The word 'superior' is a Latin comparative adjective that inherently expresses comparison.
Latin comparative adjectives ending in '-ior' (such as superior, inferior, senior, junior, prior) do not take 'more' or 'most'.
2
Determine the correct type of degree modifier permitted with comparative adjectives.
Adverbs of degree such as 'far' or 'much' correctly modify comparative adjectives to emphasize degree.
Modifiers like 'very' cannot directly modify comparative adjectives, whereas 'more' creates an ungrammatical double comparative.

Key Concept

Modification of Latin Comparative Adjectives
Estimated Time:1m 0s
Question 574Question →

Which of the following options represents the correct passive voice transformation of the active sentence: 'Should the parliamentary committee not have handed down a harsher verdict on the fraudulent board members?'

Show answer & explanation

Answer: Should a harsher verdict not have been handed down on the fraudulent board members by the parliamentary committee?

Answer

Should a harsher verdict not have been handed down on the fraudulent board members by the parliamentary committee?
The correct answer accurately converts the active sentence into the passive voice by placing the object 'a harsher verdict' after the inverted modal auxiliary 'Should', maintaining the exact modal perfect passive structure ('not have been handed down'), retaining the particle 'down', and keeping the original past aspect intact.

Step-by-Step Solution

1
Identify the core grammatical elements of the active sentence
Subject = 'the parliamentary committee'; Verb Phrase = 'should... not have handed down' (modal perfect interrogative + phrasal verb); Direct Object = 'a harsher verdict'; Prepositional Complement = 'on the fraudulent board members'.
Accurate breakdown of clause elements is essential before syntactically re-ordering into passive structure.
2
Promote the direct object to subject position while maintaining interrogative word order
The direct object 'a harsher verdict' immediately follows the auxiliary verb 'Should' to form the passive subject position.
In passive interrogatives, the initial auxiliary remains inverted before the new passive subject.
3
Transform the active modal perfect verb phrase into its corresponding passive form
'should not have handed down' becomes 'should [subject] not have been handed down'.
Modal perfect passive requires 'modal + have + been + past participle', preserving the complete phrasal particle 'down'.
4
Attach the agentive by-phrase and verify feature preservation
'by the parliamentary committee' is added at the end, yielding: 'Should a harsher verdict not have been handed down on the fraudulent board members by the parliamentary committee?'
Ensures that tense, aspect, mood, negativity, and full phrasal verb particles are strictly preserved.

Key Concept

Passive Transformation of Modal Perfect Interrogatives with Phrasal Verbs
Estimated Time:1m 30s
Question 575Question →

Read the direct statement below and complete the indirect speech transformation by supplying the appropriate words for each blank.

Fill in the blanks below

Direct Speech: "If the archival team had restored the damaged document yesterday, we could have exhibited it here today," the curator remarked.

Reported Speech: The curator remarked that if the archival team had restored the damaged document , they exhibited it .
Show answer & explanation

Answer

blank_1: the previous day (or the day before); blank_2: could have; blank_3: there; blank_4: that day
When converting third-conditional statements containing modal perfects and deictic adverbs into indirect speech, 'yesterday' becomes 'the previous day' or 'the day before', the modal perfect phrase 'could have' remains unchanged, 'here' converts to 'there', and 'today' shifts to 'that day'.

Step-by-Step Solution

1
Identify time expression transformations from direct to indirect speech.
'yesterday' converts to 'the previous day' or 'the day before', and 'today' converts to 'that day'.
Temporal adverbs indicating fixed past or present reference points shift backward relative to the reporting timeframe.
2
Determine modal verb backshift rules for modal perfect structures.
'could have' remains unchanged as 'could have'.
Modal auxiliaries in their perfect aspect (could have, would have, might have, should have) do not undergo further tense backshift in reported speech.
3
Convert spatial deictic expressions from direct to indirect speech.
'here' shifts to 'there'.
Spatial adverbs indicating proximity in direct speech shift to remote positions in reported speech when reported from a different setting.

Key Concept

Tense backshifting, modal stability, and spatial/temporal adverbial transformations in reported speech
Estimated Time:1m 30s
Question 576Question →

Which preposition correctly completes the sentence below?

Fill in the blanks below

The newly implemented administrative regulations are expected to create an atmosphere conducive sustainable institutional growth.
Show answer & explanation

Answer

The correct preposition to fill the blank is 'to'.
The adjective 'conducive' governs the dependent preposition 'to' when describing conditions that foster or help produce a specific result.

Step-by-Step Solution

1
Identify the key adjective governing the prepositional complement.
The adjective in the sentence is 'conducive'.
Prepositions following specific adjectives are fixed by dependent prepositional usage in standard English.
2
Determine the appropriate dependent preposition that collocates with 'conducive'.
The adjective 'conducive' strictly takes the dependent preposition 'to' when indicating a helpful or contributing factor.
Standard grammatical convention requires 'conducive to' rather than 'conducive for' or 'conducive with'.

Key Concept

Dependent Prepositions
Question 577Question →

Which pair of verbs correctly completes the sentence below in accordance with the rules of grammatical concord?

"Not only the chief security officer but also several of his deputies _____ questioned by the panel, even though neither of the suspect statements _____ substantiated by physical evidence."

Show answer & explanation

Answer: were / was

Answer

were / was
In the first clause, the correlative conjunction 'not only... but also...' demands that the verb agree with the subject nearest to it. Since 'several of his deputies' is plural, the plural verb 'were' is correct. In the second clause, the indefinite pronoun 'neither' acts as the singular head of the noun phrase 'neither of the suspect statements', requiring the singular verb 'was'. Combining both rules yields 'were / was'.

Step-by-Step Solution

1
Analyze the subject-verb concord rule in the first clause.
The subject uses the correlative conjunction 'not only... but also...'. In this structure, the verb must agree in number with the element closest to it (proximity concord). The nearest noun phrase is 'several of his deputies' (plural), so a plural verb ('were') is required.
Correlative subjects joined by 'not only... but also' follow proximity agreement.
2
Analyze the subject-verb concord rule in the second clause.
The subject is headed by the indefinite pronoun 'neither' in 'neither of the suspect statements'. Indefinite pronouns like 'neither', 'either', and 'each' take singular verbs regardless of intervening plural premodifiers, so 'was' is required.
Indefinite pronouns functioning as head nouns require singular verbs.
3
Combine the results to select the correct verb pair.
The correct sequence is 'were / was'.
Matches both proximity concord for the first clause and indefinite pronoun concord for the second clause.

Key Concept

Proximity Concord and Indefinite Pronoun Agreement
Question 578Question →

Which of the following connectives correctly completes the sentence below?

'The lead auditor refused to sign the financial compliance report, ______ the executive board offered him a substantial monetary incentive to overlook the discrepancies.'

Show answer & explanation

Answer: even though

Answer

The subordinating conjunction 'even though' correctly introduces the finite concessive clause following the main clause.
The connective 'even though' is a subordinating conjunction of concession designed to introduce a finite clause containing its own subject and finite verb. In the sentence, the structure following the blank is a complete finite clause ('the executive board offered him...'), making this conjunction grammatically appropriate.

Step-by-Step Solution

1
Analyze the structure of the dependent clause following the blank space.
The structure after the blank space contains a subject ('the executive board') and a finite verb ('offered'), forming a complete finite clause.
Identifying whether the structure is a noun phrase or a finite clause dictates whether a preposition or a conjunction is required.
2
Distinguish between concessive prepositions and subordinating conjunctions of concession.
Connectives like 'despite' and 'in spite of' act as prepositions and take noun phrases, whereas 'even though' functions as a subordinating conjunction that joins a finite clause to a main clause.
Placing a preposition before a finite clause without a noun complementizer creates a structural category error.
3
Select the conjunction that fulfills the grammatical and logical requirements.
'Even though' seamlessly joins the main clause to the concessive finite clause.
It establishes contrast between the auditor's refusal and the board's offer without violating clause structure rules.

Key Concept

Subordinating Conjunctions vs. Concessive Prepositions in Clause Structure
Question 579Question →

Complete the sentence by filling in the blank with the appropriate conjunction to ensure correct correlative clause structure.

Fill in the blanks below

No sooner had the principal announced the new disciplinary policy a group of students organized a peaceful protest.
Show answer & explanation

Answer

The correct conjunction to fill the blank is 'than'.
The introductory structure 'No sooner had...' introduces a negative inversion requiring the correlative subordinating conjunction 'than' to connect the main clause. The paired structure 'no sooner... than' expresses immediate sequential actions.

Step-by-Step Solution

1
Identify the initial correlative adverbial marker in the sentence.
The sentence begins with the negative inverted expression 'No sooner had'.
Negative adverbial expressions at the beginning of a clause trigger subject-auxiliary inversion and require specific correlative pairing.
2
Determine the mandatory correlative conjunction partner for 'no sooner'.
The rule of correlative conjunctions dictates that 'no sooner' must strictly pair with 'than'.
'No sooner... than' is a fixed structure used to indicate that one action happened immediately after another.

Key Concept

Correlative Conjunctions and Negative Inversion
Estimated Time:45s
Question 580Question →

The collection of rare antique coins stored inside the wooden boxes ______ on display at the national museum today. Which of the following options correctly completes the sentence in accordance with subject-verb concord?

Show answer & explanation

Answer: is

Answer

The singular verb 'is' correctly completes the sentence.
The sentence requires the singular verb 'is' because the grammatical subject is the singular head noun 'collection'. The modifying prepositional phrase 'of rare antique coins' and the participial phrase 'stored inside the wooden boxes' contain plural nouns, but these do not alter the singular requirement of the main subject.

Step-by-Step Solution

1
Identify the head noun of the subject phrase
The complete subject phrase is 'The collection of rare antique coins stored inside the wooden boxes', where the head noun is 'collection'.
Prepositional phrases ('of rare antique coins') and participial modifiers ('stored inside the wooden boxes') post-modify the head noun but do not change its singular grammatical number.
2
Apply the rule of subject-verb concord
A singular head noun requires a singular verb form ('is').
Subject-verb agreement dictates that the verb must agree with the structural head noun rather than any intervening plural nouns.

Key Concept

Subject-Verb Concord (Error of Proximity)
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