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    –Why are you so worried? --There are so many problems . A. remaining to solve B. remained solving C. remaining to be solved D. remained to be solved 【查看更多】

     

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     –Why are you so worried?

       --There are so many problems          .

       A. remaining to solve                                         B. remained solving      

    C. remaining to be solved                                         D. remained to be solved

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