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    This problem may lead to more serious ones if unsolved. A. left B. making C. remained D. keeping 【查看更多】

     

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    This problem may lead to more serious ones if ________ unsolved.

       A. left              B. making           C. remained             D. keeping

     

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    This problem may lead to more serious ones if ____ unsolved.                 

    A. left B. remained      C. keeping    D. making

     

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    This problem may lead to more serious ones if _____ unsolved.

    [     ]

    A. left
    B. remained
    C. keeping
    D. making

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     This problem may lead to more serious ones if _____ unsolved.

    A. left                B. keeping             C. remained           D. making

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    This problem may lead to more serious ones if ____ unsolved.

    A、making       B、remained   C、keeping      D、left

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