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    Cars play an important role in modern life , but they also cause many problems like air pollution. A. should B. can C. must D. will 【查看更多】

     

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    Cars play an important role in modern life, but they_______also cause many problems like air pollution．

           A．should     B．can   C．must        D．Will

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    Cars play an important role in modern life, but they ______ also cause many problems like air pollution.

    A. should               B. can              C. must                 D. will

     

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    Cars play an important role in modern life, but they ______ also cause many problems like air pollution.


    1. A.
      should
    2. B.
      can
    3. C.
      must
    4. D.
      will

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    .

    Cars play an important role in modern life , but they ____ also cause many problems like air pollution.

       A. should         B. can            C. must            D. will   

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    Cars play an important role in modern life , but they            also cause many problems like air pollution.

       A. should         B. can            C. must            D. will 

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