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    9．He would have attended your birthday party but he himself with a very important experiment. A．occupied B．has occupied C．had occupied D．has been occupying 【查看更多】

     

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    He would have attended your birthday party but he ________ himself with a very important experiment．


    1. A.
      occupied
    2. B.
      has occupied
    3. C.
      had occupied
    4. D.
      has been occupying

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    He would have attended your birthday party but he ______ himself with a very important experiment.

       A. occupied      B. has occupied        C. had occupied      D. has been occupying

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    He would have attended your birthday party but he _________ himself with a very important experiment.

    A．occupied   B．has occupied    C．had occupied    D．has been occupying

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    He would have attended your birthday party but he ________ himself with a very important experiment．

    [　　]

    A．occupied

    B．has occupied

    C．had occupied

    D．has been occupying

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