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    33．Measures have been taken to solve the problem , but it may be some time the situation improves . A．since B．when C．unless D．before 【查看更多】

     

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    Measures have been taken to solve the problem, but it may be some time ____ the situation improves.

    A. since　　 B. when　　 　 C. unless 　 D. before

     

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    Measures have been taken to solve the problem, but it may be some time ________ the situation improves．


    1. A.
      since
    2. B.
      when
    3. C.
      before
    4. D.
      unless

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    Measures have been taken to solve the problem, but it may be some time________the situation improves.
    [     ]
    A. since  
    B. when  
    C. unless  
    D. before

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    Measures have been taken to solve the problem, but it may be some time________the situation improves.
    [     ]
    A. since  
    B. when  
    C. unless  
    D. before

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    Measures have been taken to solve the problem, but it may be some time ____ the situation improves．

           A．since           B．when           C．unless     D．before

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