练习册

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    I didn't hear the phone last night. I asleep. A. must be B. should have been C. must have been D. should be 分析:此题中“must + have + p.p 表示对过去的推断.虽未证实.但十分有把握.意为“一定 .“准是 ,“should + have + p. p 表示过去该做而实际未做的事.含有后悔或责备的意味.根据前句语境.可能判断出C是正确的. 【查看更多】

     

    题目列表(包括答案和解析)

    225. I didn’t hear the phone last night. I _____asleep.

    A. must be             B. must have been      C. should be               D. should have been

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    225. I didn’t hear the phone last night. I _____asleep.

    A．must be

    B．must have been

    C．should be

    D．should have been

     

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    I didn't hear the phone last night．I ________ asleep．

    [　　]

    A．must be

    B．should have been

    C．must have been

    D．should

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