练习册

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    35．B.can’t have done表示对过去发生的行为的不肯定推测.意为“不可能干过某事 . 【查看更多】

     

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     —Has your father got up?

        —Sorry, I’m not sure. He __________ got up. Please go and see for yourself.

           A．must have           B．can’t have           C．would have          D．might have

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    She______ the film. She knew nothing about it.

    A．can’t see

    B．can’t have seen

    C．must see

    D．mustn’t have seen

     

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    25．Why didn’t you tell me there was no meeting today? I      all the way here      the heavy snow.

             A．needn’t have driven; through   B．can’t have driven; across

             C．mustn’t have driven; through   D．shouldn’t have driven; cross

     

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    But for your help，I ________ the place.

    A．can’t find　　　　 B．can’t have found   C．couldn’t have found D．haven’t found

     

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    —Has your father got up?

        —Sorry, I’m not sure. He __________ got up. Please go and see for yourself.

           A．must have B．can’t have C．would have      D．might have

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