Which sentence uses the correct verb form?
AShe not know the answer.
BShe don't know the answer.
CShe doesn't know the answer.
DShe doesn't knows the answer.
Explanation
– The subject ‘She’ is third person singular, requiring ‘doesn’t’ not ‘don’t’.
– After the auxiliary ‘doesn’t’, the main verb stays in base form (‘know’), not ‘knows’.
– Correct: She doesn’t know the answer.
Exam Relevance
- Topic: Grammar
- Subtopic: Subject-Verb Agreement
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