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    精英家教网 > 高中英语 > 题目详情

    ---Why hasn’t Jane arrived yet?  
    ---She ______ again in the morning.

    A．shouldn’t have overslept
    B．may have turned off the alarm clock
    C．must have no one to call her
    D．should have someone to wake her up

    B

    解析试题分析：句意：对不起。我迟到了。我可能是把闹钟关了，又睡回笼觉了。might 表示“有可能...”。  might have done sth. 是常用句型，表示在过去可能做了什么。用should（n’t） have done就表示“过去（不）应该做而没做（做了）”，must have done过去一定做了，选B。
    考点：考查情态动词的完成式

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