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    精英家教网 > 高中英语 > 题目详情

    They       have got lost, or had an accident.

    A．canB．mightC．mustD．mustn’t

    B

    解析试题分析：考查情态动词：句意：他们可能迷路了，也可能出事了。Might have done过去可能做了，can用于推测，一般是否定和疑问句中，must have done过去一定做了，mustn’t不能和have done连用，选B。
    考点：考查情态动词

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