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    ( )The students a biology class when the visitors came. A.had B.were having C.will have 【查看更多】

     

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    The students ________ a biology class when the visitors came．

    [　　]

    A．had

    B．were having

    C．will have

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    The students _______ a biology class when the visitors came.

    [　　]

    A. had

    B. were having

    C. will have

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    The students _______ a biology class when the visitors came.

    [　　]

    A. had

    B. were having

    C. will have

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    The students ________ a biology class when the visitors came．

    [　　]
    A．

    had

    B．

    were having

    C．

    will have

    D．

    are having

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