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    题目列表(包括答案和解析)

    Sleeping with the lights ________ is a waste.


    1. A.
      on
    2. B.
      turn on
    3. C.
      burned
    4. D.
      out

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    Sleeping with the lights on is a waste. You'd better ________ all the lights are off before you go to bed.


    1. A.
      look for
    2. B.
      try out
    3. C.
      make sure
    4. D.
      think hard

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    Sleeping _____ is bad for your health.     
    [     ]
    A. too man
    B. too much
    C. many to
    D. much too

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    Sleeping with the lights on is a waste.  You'd better______all the lights are off before you go to bed.
                  
    [     ]
    A. look for                
    B. try out              
    C. make sure              
    D. think hard

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    Sleeping with the lights on is a waste. You had better _____ all the lights are off before you go to bed.
    [     ]
    A. make sure
    B. look for
    C. try out
    D. think hard

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