The samples on the tray in the lab _ testing.
Correct answer: A. Need
- A. Need
- B. Needs
- C. Needing
- D. Needed
Explanation
The subject of the sentence is "the samples", which is plural. The verb must also be plural to agree with the subject. The correct present tense form of the verb "need" is "need", which agrees with the subject "samples".
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About Subject-Verb Agreement
Subject-verb agreement requires the verb to match the true subject in number and person, even when other words intervene. Questions cover collective nouns, compound subjects, indefinite pronouns, either and neither, relative clauses, quantities and inverted sentences, where proximity can falsely suggest the wrong verb.
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