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    The pupils here all kinds of exercises every day. A. kept busy doing B. keep on doing C. have kept busy doing D. have been kept busy doing 【查看更多】

     

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    The pupils here_____ all kinds of exercises every day in the past few weeks.

    　A. kept busy doing B. keep on doing

    　C. have kept busy doing D. have been kept busy doing

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    The pupils here ________ all kinds of exercises every day in the past four weeks．

    [　　]

    A．kept busy doing

    B．keep on doing

    C．have kept busy doing

    D．have been kept busy doing

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