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    , I think, and the problems could be solved A. A bit more efforts B. If you double your efforts C. Making greater efforts D. On condition that you keep up your spirits 【查看更多】

     

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     _________, I think, and the problems could be solved

    A. A bit more efforts                   B. If you double your efforts  

    C. Making greater efforts               D. On condition that you keep up your spirits

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