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youfinishallthetasksintheliimitedtimeAdon‘thaveBdont'havetoChaven’ttoDdoesn'thaveto

题目详情
you_____finish all the tasks in the liimited time A don‘t haveB dont' have to C haven’t to
D doesn't have to
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答案和解析
have to 是固定搭配,表示“不得不”否定形式为don't have to,所以选B