Multiple choice

Tom doesn't ---- about the accident.

  1. know

  2. recalled

  3. known

  4. knew
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A Correct answer
Explanation

In negative sentences with auxiliary verbs like 'doesn't', the main verb takes its base form (infinitive without 'to'). 'Doesn't know' follows this rule - 'know' is the base form, not the past tense 'knew' or past participle 'known'.

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