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    Some policemen should be sent to them trees. A. prevent; to cut down B. stop; cutting down C. keep; to cut down D. keep; cutting down 【查看更多】

     

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     Some policemen should be sent to _____ them _____ the trees.

       A. prevent; to cut down    B. stop; cutting down

       C. keep; to cut down      D. keep; cutting down

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    Some policemen should be sent to _______ them ________ the trees.

    [　　]

    A．prevent; to cut down

    B．stop; cutting down

    C．keep; to cut down

    D．keep; cutting down

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    Some policemen should be sent to _______ them ________ the trees.

    [　　]

    A．prevent; to cut down

    B．stop; cutting down

    C．keep; to cut down

    D．keep; cutting down

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