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    There is a new problem involved in the popularity of private cars road condition need . A. that; to be improved B. which; to be improved C. where; improving D. when; improving 【查看更多】

     

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    There is a new problem involved in the popularity of private cars ____ road condition need ____ .
    A. that; to be improved          B. which; to be improved
    C. where; to be improved        D. when; improving

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