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    We believe scientists will a way to solve the problem of air pollution. A. set off B. put off C. come up with D. catch up with 【查看更多】

     

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    We believe scientists will ______ a way to solve the problem of air pollution.
    [     ]
    A. set off
    B. put off
    C. come up with
    D. catch up with

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    We believe scientists will ________ a way to solve the problem of air pollution．


    1. A.
      set off
    2. B.
      put off
    3. C.
      come up with
    4. D.
      catch up with

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