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    29．Only when the villagers were faced with water shortage how serious the problem of water pollution was. A．did they realize B．will they realize C．they did realize D．were they realized 【查看更多】

     

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    Only when the villagers were faced with water shortage___       how serious the problem of water pollution was．


    1. A.
      did they realize
    2. B.
      will they realize
    3. C.
      they did realize
    4. D.
      were they realized

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    Only when the villagers were faced with water shortage___ ____ how serious the problem of water pollution was．

    A．did they realize                B．will they realize 

    C．they did realize                D．were they realized

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    Only when the villagers were faced with water shortage___       how serious the problem of water pollution was．

    A．did they realize      B．will they realize      C．they did realize     D．were they realized

    查看答案和解析>>

    Only when the villagers were faced with water shortage___       how serious the problem of water pollution was．

    A．did they realize      B．will they realize      C．they did realize     D．were they realized

    查看答案和解析>>


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