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    精英家教网 > 高中英语 > 题目详情
    Many questions have been answered by John. He must have previewed the lessons last night, ____ he?
    A．needn’t B．hasn’t C．didn’t D．mustn’t
    C
    考查反义疑问句。此题中含有情态动词表推测用法，must have done 表示对过去事情肯定的推测，根据时间last night，动作在昨天晚上，所以用didn’t反问，选C。
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