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    ( ) It is important for us our English. A. improving B. improved C. to improve 【查看更多】

     

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    It is important for us _____ our English.

    A. improving B. improved C. to improve D. improves

     

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    It is important for us ________ our English．

    [　　]

    A．improving

    B．improved

    C．to improve

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