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Grammatical Structure

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Question 221Question →

The school principal warmly congratulated the top-performing student ______ her outstanding achievement in the national debate competition. Which preposition correctly completes the sentence?

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Answer: on

Answer

The correct preposition is 'on'.
In standard English grammar, the verb 'congratulate' takes the dependent preposition 'on' when expressing praise for a specific achievement or occasion.

Step-by-Step Solution

1
Identify the primary verb in the sentence requiring a dependent preposition.
The verb is 'congratulated'.
The sentence describes extending praise to a student for an achievement.
2
Determine the standard dependent preposition that pairs with 'congratulate'.
The verb 'congratulate' fixedly pairs with the preposition 'on'.
In standard English grammar, one congratulates someone 'on' a successful event or outcome.

Key Concept

Dependent Prepositions and Prepositional Collocations
Question 222Question →

Consider the sentence below:
"Each of the newly appointed diplomats _____ scheduled to present credentials to the President tomorrow."

Which verb form correctly completes the sentence?

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Answer: is

Answer

The singular verb 'is' correctly completes the sentence.
The sentence subject is the singular indefinite pronoun 'Each'. In English grammar, modifying prepositional phrases like 'of the newly appointed diplomats' do not alter the number of the subject. Therefore, the singular verb 'is' is required for subject-verb agreement.

Step-by-Step Solution

1
Identify the true grammatical subject of the sentence.
The subject is the indefinite pronoun 'Each', not the plural noun 'diplomats' inside the prepositional phrase 'of the newly appointed diplomats'.
Nouns inside prepositional phrases modifying the subject do not change the number of the subject.
2
Determine the required verb number (singular vs. plural).
The indefinite pronoun 'Each' is grammatically singular and requires a singular verb.
Standard English concord rules dictate that singular indefinite pronouns take singular verbs.
3
Select the correct present/future passive verb form.
'is' is the appropriate singular present tense auxiliary verb to complete 'is scheduled... tomorrow'.
'is' maintains proper concord with 'Each'.

Key Concept

Subject-Verb Concord with Indefinite Pronouns
Estimated Time:40s
Question 223Question →

What the managing editor, along with the senior journalists, _______ to publish in tomorrow's edition is a detailed report on municipal corruption. Which verb form correctly completes the sentence?

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Answer: intends

Answer

The correct option is 'intends' because the singular head noun 'managing editor' governs the verb within the noun clause, regardless of the intervening prepositional phrase 'along with the senior journalists'.
The correct verb form is 'intends'. In standard English grammar, parenthetical or prepositional expressions introduced by phrases like 'along with', 'together with', or 'as well as' do not pluralize a singular head noun. The grammatical subject of the clause remains the singular noun 'managing editor', which requires the singular present-tense verb 'intends'.

Step-by-Step Solution

1
Analyze the clause structure to isolate the subject of the verb in the blank.
The blank lies inside the nominal clause 'What the managing editor, along with the senior journalists, _______'.
Identifying the clause boundaries clarifies which noun phrase serves as the subject for the missing verb.
2
Determine the true head noun of the subject phrase.
The head noun is the singular noun 'managing editor'.
Phrases introduced by quasi-conjunctions such as 'along with', 'as well as', and 'together with' are prepositional adjuncts and do not create a compound plural subject.
3
Apply the rule of subject-verb agreement to select the correct verb form.
The singular third-person verb form 'intends' is required.
A singular head noun requires a singular verb in the present tense.

Key Concept

Subject-Verb Agreement with Intervening Prepositional Phrases
Question 224Question →

In formal administrative register, specific adjectives demand precise dependent prepositions to express duty or necessity. Which preposition correctly completes the sentence below?

'The executive committee ruled that ensuring strict compliance with safety standards is incumbent ________ every project supervisor.'

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Answer: upon

Answer

The correct preposition is 'upon' (or 'on'), as 'incumbent' strictly collocates with 'upon' when assigning a duty or obligation to a subject.
The adjective 'incumbent' requires the dependent preposition 'upon' (or 'on') when expressing that a particular duty, obligation, or task rests with a specified person or authority. Therefore, 'upon' correctly completes the sentence.

Step-by-Step Solution

1
Identify the key head adjective requiring a dependent preposition in the target clause.
The target adjective is 'incumbent'.
Prepositional selection in formal English depends on the fixed collocational requirement of the controlling word.
2
Determine the formal grammatical rule governing dependent prepositions for 'incumbent'.
When 'incumbent' means 'imposed as a duty or responsibility', it is obligatorily followed by 'upon' or 'on'.
Standard English syntax mandates 'incumbent upon/on [someone]' to express moral or legal obligation.
3
Evaluate the options against standard formal usage.
'upon' is the only grammatically and idiomatically valid preposition among the choices.
Alternative prepositions such as 'to', 'for', and 'with' break standard adjective-preposition collocation rules.

Key Concept

Dependent prepositions following adjectives of obligation
Question 225Question →

Consider the conditional sentence: 'Had the financial auditors scrutinized the ledger more thoroughly, the major accounting discrepancies _____ much earlier.' Which of the following verb forms correctly completes the sentence?

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Answer: would have been detected

Answer

The verb phrase 'would have been detected' correctly completes the sentence.
The sentence features an inverted third conditional structure ('Had the financial auditors scrutinized...'). The main clause of a third conditional sentence expressing a past unfulfilled event requires the structure 'would/could/might + have + past participle'. Because the subject 'discrepancies' is passive, the correct form is 'would have been detected'.

Step-by-Step Solution

1
Analyze the structural pattern of the IF-clause
The clause 'Had the financial auditors scrutinized' is an inverted third conditional structure equivalent to 'If the financial auditors had scrutinized'.
Inverted third conditional clauses express an unfulfilled past condition using past perfect inversion.
2
Determine the required structure for the main clause
The main clause must use 'would have' + past participle to complete a third conditional sentence, modified into passive voice ('would have been detected') because the subject 'discrepancies' receives the action.
Third conditional structures require perfect modal verbs in the consequence clause to denote past hypothetical results.

Key Concept

Inverted Third Conditional and Past Perfect Aspect
Question 226Question →

The new hull coating developed by the marine research institute is completely impervious _____ corrosion caused by prolonged exposure to salt water. Which of the following prepositions correctly completes the sentence?

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Answer: to

Answer

The preposition 'to' correctly completes the sentence because the adjective 'impervious' obligatorily takes the dependent preposition 'to'.
The correct response uses 'to' because 'impervious' is a fixed adjective-preposition collocation that takes 'to' to indicate resistance or penetration limits.

Step-by-Step Solution

1
Identify the head word preceding the preposition blank
The target word is the adjective 'impervious'.
Prepositional complementation depends on the specific lexical head (adjective, verb, or noun) in the clause.
2
Determine the required dependent preposition for 'impervious'
'Impervious' requires 'to' (impervious to something).
Standard English grammatical collocations dictate that 'impervious' pairs exclusively with 'to' when meaning incapable of being passed through or affected by.

Key Concept

Dependent Prepositions following Adjectives
Estimated Time:50s
Question 227Question →

Complete the sentence below by supplying the correct form of the verb provided in parentheses.

Fill in the blanks below

Many a seasoned diplomat in the ministry (have) expressed deep concern over the recent breakdown of bilateral negotiations.
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Answer

has
In formal English concord rules, the idiomatic determiner expression 'many a' is followed by a singular countable noun and strictly demands a singular verb. Thus, 'has' is the grammatically correct form to complete the present perfect construction.

Step-by-Step Solution

1
Identify the grammatical subject structure of the sentence.
The subject phrase is 'Many a seasoned diplomat'.
The sentence begins with the expression 'many a' modifying the singular noun 'diplomat'.
2
Apply the rule of subject-verb agreement (concord) governing 'many a'.
The structure 'many a' + singular noun requires a singular verb.
Although 'many a' conveys a plural concept semantically, syntactically it mandates singular agreement.
3
Conjugate the auxiliary verb in parentheses '(have)' to agree with the singular subject in the present perfect tense.
The correct singular auxiliary verb form is 'has'.
'Has' agrees in number with the singular noun head 'diplomat'.

Key Concept

Concord with 'Many a' + Singular Noun
Question 228Question →

The chief technician noted that the automated cooling units activated immediately after the temperature spike, which indicates that the emergency backup system ________ running properly at the time. Which of the following modal verb expressions correctly completes the sentence to express a strong logical deduction about a past action?

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Answer: must have been

Answer

must have been
The expression 'must have been' is correct because 'must' + perfect infinitive ('have' + past participle) expresses a strong, logical deduction about a completed past action based on given evidence.

Step-by-Step Solution

1
Analyze the communicative function required by the context.
The phrase 'which indicates that' signals that a logical conclusion/deduction is being drawn based on past empirical evidence.
Modal auxiliaries express different degrees of modality such as obligation, permission, capability, or logical deduction.
2
Determine the correct modal verb structure for past logical deduction.
Past logical deduction requires the modal verb 'must' followed by the perfect infinitive ('have' + past participle).
'Must have been' conveys high certainty about a past event.
3
Evaluate the grammatical validity of each distractor.
Options containing double modals ('might can', 'should could') or modal + to-infinitive ('must to') violate English auxiliary syntax rules.
English modal auxiliaries cannot be combined in sequence and must be followed directly by a bare infinitive.

Key Concept

Expressing past logical deduction using modal auxiliaries
Estimated Time:1m 0s
Question 229Question →

Consider the following sentence from an official audit report:

"Had the parliamentary committee scrutinised the auditor's financial report more thoroughly before the plenary session, the discrepancy in the budgetary allocation ________ long before the bill was passed into law."

Which of the following verb forms best completes the sentence to express the correct tense and aspectual alignment?

Show answer & explanation

Answer: would have been detected

Answer

would have been detected
The sentence features an inverted third conditional structure ('Had the parliamentary committee scrutinised...'), which sets up a past hypothetical condition that did not happen. In English grammar, the main clause of a third conditional sentence must use the modal conditional perfect form ('would have' + past participle). Because the target noun 'discrepancy' is receiving the action of detection, the passive continuous aspectual verb string 'would have been detected' is grammatically mandatory.

Step-by-Step Solution

1
Analyze the clause structure and conditional marker in the subordinate clause.
The clause begins with 'Had the parliamentary committee scrutinised...', which is an inverted third conditional construction (equivalent to 'If the parliamentary committee had scrutinised...').
Recognizing inversion of the auxiliary 'had' helps determine that the sentence deals with an unfulfilled past condition.
2
Determine the required tense, aspect, and mood for the main clause.
A third conditional sentence requires a main clause formed with 'would have' + past participle (perfect conditional). Because the subject 'discrepancy' undergoes the action, the passive form 'would have been' + past participle is required.
The main clause must express a past hypothetical result aligned grammatically with the past perfect condition.
3
Evaluate the choices to select the grammatically correct passive conditional perfect form.
'would have been detected' fulfills all criteria of tense, aspect, and passive voice.
No other choice supplies both the perfect aspect modal frame ('would have been') and appropriate past participle.

Key Concept

Inverted Third Conditional and Perfect Aspect Alignment
Estimated Time:1m 30s
Question 230Question →

During the parliamentary debate, the opposition leader argued that the Finance Minister acted rashly, remarking: 'I would rather the minister _______ the advisory committee before announcing such drastic tariff increases.' Which of the following verb forms correctly completes the sentence to express an unfulfilled past preference?

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Answer: had consulted

Answer

had consulted
When 'would rather' is followed by a subject clause and refers to a past action or regret (something that did not happen in the past), the verb must be in the past perfect tense ('had consulted'). This expresses an unfulfilled past preference in subjunctive mood.

Step-by-Step Solution

1
Analyze the sentence structure and key introductory trigger phrase.
Identified the structure 'would rather + [different subject]' ('I would rather the minister...').
This construct requires a subjunctive/unreal past verb form.
2
Determine the time frame of the action being referenced.
The action (announcing tariff increases) occurred in the past, indicated by the main verb 'acted rashly'.
The preference refers to a past situation that did not happen.
3
Apply the grammatical rule for past unreal preference after 'would rather'.
When 'would rather + subject' refers to past time, it mandates the past perfect tense ('had + past participle').
Selecting 'had consulted' satisfies the requirement for a past unreal condition.

Key Concept

Unreal Past Tense with 'Would Rather'
Estimated Time:1m 30s
Question 231Question →

Complete the sentence below by supplying the correct preposition.

Fill in the blanks below

The harsh environmental conditions in the desert are not conducive human habitation.
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Answer

The correct preposition to complete the sentence is 'to'.
The adjective 'conducive' is conventionally followed by the preposition 'to' when expressing that something contributes toward a result or condition.

Step-by-Step Solution

1
Identify the adjective requiring a dependent preposition in the sentence context.
The target word is the adjective 'conducive'.
Certain adjectives in standard English grammar strictly take specific prepositions to express relationships.
2
Determine the correct dependent preposition that collocates with 'conducive'.
The adjective 'conducive' pairs with the preposition 'to' (meaning making a certain situation or outcome likely or possible).
Substitutions such as 'for', 'with', or 'in' result in unnatural collocation and non-standard grammatical structure.

Key Concept

Dependent Prepositions with Adjectives
Question 232Question →

During the parliamentary inquiry into the financial irregularities, the committee chairman insisted that the permanent secretary __________ all archived transaction registers to the auditor immediately. Which of the following verb forms correctly completes the sentence?

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Answer: submit

Answer

The correct answer is the uninflected base verb form 'submit'.
The verb form 'submit' is correct because the main clause features the verb of insistence 'insisted that', which mandates the use of the subjunctive mood in the subsequent dependent clause. The subjunctive mood in formal English mandates the uninflected base form of the verb, regardless of tense agreement with the main clause or subject number.

Step-by-Step Solution

1
Analyze the main clause verb and sentence structure.
The main verb is 'insisted', followed by a 'that'-clause expressing a demand or directive requirement.
Verbs expressing recommendation, insistence, demand, or request (e.g., insist, demand, propose, recommend) trigger the mandative subjunctive mood in subordinate clauses.
2
Determine the grammatical requirements of the mandative subjunctive.
The subordinate clause verb must appear in its bare base form (infinitive without 'to') without tense backshifting or subject-verb inflection.
In standard English grammar, mandative subjunctive clauses remain uninflected (e.g., 'that he submit', 'that she be', 'that they comply') irrespective of whether the main clause verb is in the past tense or whether the subject is singular.
3
Select the verb option that conforms strictly to the bare subjunctive rule.
'submit' is the only uninflected base form provided among the options.
Forms like 'submitted' (past tense), 'submits' (present indicative singular), and 'would submit' (modal auxiliary) violate subjunctive structure rules.

Key Concept

Mandative Subjunctive Mood with Verbs of Insistence and Demand
Question 233Question →

Read the sentence below:
'The students _______ submit their final projects by noon yesterday, but the server crashed unexpectedly.'

Which of the following options correctly completes the sentence?

Show answer & explanation

Answer: were supposed to

Answer

were supposed to
The phrase 'were supposed to' correctly expresses a past expectation or obligation that was scheduled to happen before the unexpected event occurred. It fits both the past temporal context ('yesterday') and grammatical requirements.

Step-by-Step Solution

1
Analyze the sentence context and tense requirement
The event refers to a past expectation ('yesterday') that was interrupted or left unfulfilled.
The sentence requires a semi-modal structure or past modal construction expressing past obligation or expectation.
2
Evaluate the grammatical validity of modal auxiliary structures
'Were supposed to' is grammatically correct for past obligation, whereas options introducing double modals ('might can'), bare infinitive errors ('must to'), or mis-inflected auxiliaries ('should had') violate standard English rules.
Modal auxiliaries must follow strict complementation rules in English.

Key Concept

Expressing Past Obligation and Modal Auxiliary Constraints
Question 234Question →

Complete the sentence below by filling in the blank with the most appropriate modal verb to express advice or strong recommendation.

Fill in the blanks below

If you experience severe symptoms, you consult a qualified physician without delay.
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Answer

should
The modal auxiliary 'should' (or 'must' / 'ought to') appropriately expresses advice or strong recommendation in response to health symptoms.

Step-by-Step Solution

1
Analyze the context of the sentence to determine the intended modality.
The clause 'If you experience severe symptoms' sets up a condition requiring a recommendation or advice regarding health.
Modal auxiliary verbs such as 'should', 'must', or 'ought to' express advisability, recommendation, or duty in English.
2
Select the appropriate bare infinitive modal auxiliary that fits grammatically before 'consult'.
'should' correctly precedes the base verb 'consult' without requiring an additional particle like 'to'.
Standard modal auxiliaries (except 'ought') are followed directly by the bare infinitive of the main verb.

Key Concept

Expressing Advice and Recommendation with Modal Auxiliaries
Question 235Question →

Complete the sentence below by filling in the blank with the grammatically correct verb form.

Fill in the blanks below

Either of the two shortlisted candidates qualified to head the department.
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Answer

is
The distributive indefinite pronoun 'Either' serves as the simple subject of the sentence. In formal concord rules, 'either' refers to one of two items individually and strictly requires a singular verb. Therefore, 'is' is the grammatically correct verb form.

Step-by-Step Solution

1
Identify the grammatical subject of the clause.
The subject is the indefinite pronoun phrase 'Either of the two shortlisted candidates'.
The head word of the subject phrase is the distributive indefinite pronoun 'Either'.
2
Apply the grammatical concord rule for distributive indefinite pronouns.
The pronoun 'Either' takes a singular verb despite being followed by the plural noun phrase 'shortlisted candidates'.
In standard formal English concord, distributive pronouns like 'either', 'neither', and 'each' refer to items individually and require singular agreement.
3
Select the correct singular present verb form.
The singular verb form 'is' correctly completes the sentence.
The singular present verb 'is' agrees in number with the singular subject 'Either'.

Key Concept

Indefinite Pronoun Concord (Distributive Pronouns)
Estimated Time:45s
Question 236Question →

Complete the following sentence by providing the correct preposition.

Fill in the blanks below

All citizens are expected to abide the laws of the land regardless of their social standing.
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Answer

by
The preposition 'by' correctly completes the standard prepositional collocation with 'abide', forming the expression 'abide by', which means to adhere to or comply with established laws or decisions.

Step-by-Step Solution

1
Identify the verb requiring a specific dependent preposition in the context of obeying rules or laws.
The verb 'abide' forms a fixed grammatical collocation with the preposition 'by'.
In standard English usage, 'abide by' is the established phrasal combination meaning to accept, conform to, or obey a rule, law, or decision.

Key Concept

Dependent prepositions and fixed prepositional collocations
Estimated Time:45s
Question 237Question →

Fill in the blank space with the most appropriate modal verb phrase (using the verb provided in parentheses) to complete the sentence correctly.

Fill in the blanks below

The delegates (print) physical copies of the dossier, as complete electronic versions had already been dispatched to all participants before the symposium.
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Answer

needn't have printed (or need not have printed)
The modal auxiliary phrase 'needn't have printed' (or 'need not have printed') is the correct choice because it expresses that the delegates printed the physical copies, but doing so was unnecessary since digital versions had already been sent.

Step-by-Step Solution

1
Analyze the past context of the sentence to determine modality requirements.
The dependent clause ('as complete electronic versions had already been dispatched...') demonstrates that creating hard copies was redundant, yet the delegates carried out the action.
Establishing whether a past action occurred needlessly determines the specific modal perfect form required.
2
Apply the modal auxiliary structure that expresses an unnecessary past action that was nonetheless performed.
The grammatical construction 'needn't have + past participle' (or 'need not have + past participle') uniquely conveys that an action was executed unnecessarily in the past.
Using 'needn't have printed' precisely satisfies both the past aspect and the nuance of unneeded effort.

Key Concept

Expressing Unnecessary Past Actions (Needn't have + Past Participle)
Estimated Time:1m 30s
Question 238Question →

Complete the sentence below with the correct tense and aspect form of the verb to show an action completed before another past event.

Fill in the blanks below

By the time the board of directors assembled for the emergency meeting, the managing director his resignation letter.
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Answer

had submitted
The correct verb form 'had submitted' uses the past perfect tense to clearly indicate that the act of submitting the resignation occurred and was completed prior to the past time when the board assembled.

Step-by-Step Solution

1
Identify the time markers and sequence of past events in the sentence.
The sentence contains two events occurring in the past: the assembling of the board ('assembled') and the submission of the resignation letter.
The clause introduced by 'By the time' establishes a past reference point.
2
Determine the appropriate aspect for an action completed prior to another past action.
The action of submitting the letter was completed before the board assembled, requiring the past perfect tense ('had + past participle').
The past perfect tense is used to denote an action that took place prior to a specific point of time in the past.

Key Concept

Past Perfect Tense for Pre-existing Past Actions
Estimated Time:1m 0s
Question 239Question →

Which subordinating conjunction of cause correctly completes the sentence below?

Fill in the blanks below

The candidate was disqualified from the examination he brought unauthorized materials into the testing hall.
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Answer

The conjunction 'because' (or 'since' / 'as') correctly introduces the adverbial clause of cause.
The sentence establishes a direct cause-and-effect relationship where the subordinate clause explains the reason for the candidate's disqualification. The subordinating conjunction 'because' (or its synonyms 'since' and 'as') appropriately introduces an adverbial clause of cause.

Step-by-Step Solution

1
Analyze the relationship between the main clause and the subordinate clause.
The main clause states an action ('The candidate was disqualified'), while the subordinate clause provides the reason for that outcome.
Determining the logical connection between the clauses is necessary to select the proper conjunction.
2
Select a subordinating conjunction that expresses cause or reason.
'Because', 'since', or 'as' properly link a main clause to an adverbial clause of cause.
Subordinating conjunctions of cause introduce explanations for events described in the main clause.

Key Concept

Subordinating Conjunctions of Cause
Estimated Time:45s
Question 240Question →

Supply the appropriate preposition to complete the sentence correctly.

Fill in the blanks below

After working for over a decade in the noisy factory environment, the machine operators became completely inured the deafening sound of heavy equipment.
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Answer

The correct preposition required to complete the sentence is 'to'.
The adjective 'inured' means habituated or accustomed to something undesirable, and in formal grammatical structure, it is followed exclusively by the preposition 'to'.

Step-by-Step Solution

1
Identify the adjective requiring a dependent preposition in the sentence context.
The adjective is 'inured', which means becoming accustomed to something unpleasant or arduous.
Standard grammatical usage requires specific prepositions to follow certain adjectives to form correct collocations.
2
Determine the correct dependent preposition for 'inured'.
The adjective 'inured' strictly collocates with the preposition 'to'.
In formal English, one becomes 'inured to' a hardship, noise, or difficult situation.

Key Concept

Dependent Prepositions with Adjectives
Estimated Time:1m 0s
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