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Question

Difficulty: MediumSubject-Verb Agreement (Concord)

Complete the sentence below by supplying the correct auxiliary verb form that satisfies the rules of grammatical concord.

Answer:Dr. Adeleke is the only one of the senior researchers who 【has】 received the prestigious international fellowship this year.

Answer

The correct verb form to complete the blank is 'has'.
The singular verb 'has' is required because the phrase 'the only one of' specifies a single individual as the antecedent of the relative pronoun 'who'. Consequently, the verb following 'who' must agree with the singular noun 'one'.

Step-by-Step Solution

1
Analyze the subject structure and the effect of the phrase 'the only one of' on the relative clause.
The phrase 'the only one of' restricts the antecedent of the relative pronoun 'who' to the singular concept 'one', rather than the plural noun 'researchers'.
In standard English concord, while 'one of those who' takes a plural verb, adding 'the only' shifts the focus to the single individual, requiring a singular verb in the relative clause.
2
Select the appropriate third-person singular present perfect auxiliary verb.
The correct singular auxiliary verb is 'has'.
'has' agrees in number with the singular antecedent 'the only one'.

Key Concept

Subject-Verb Agreement with Relative Clauses and Restrictive Phrases ('The Only One Of')
Estimated Time:1m 0s
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Topics

Subject-Verb Agreement (Concord)

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