Whoever leaves the office last must make sure the light is _________．


  1. A.
    switched on
  2. B.
    switched off
  3. C.
    switched over
  4. D.
    switched to
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What fun it is to __________ what styles of painting they will create in the future!


  1. A.
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The police ________ the murderer everywhere when he suddenly turned up in a theater.


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    were searching for
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Don't ________ to ask me you have any questions.


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The factory ________ we paid a visit is very big and modern．


  1. A.
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All her life was devoted to ______ disabled children in the center.


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The music was very familiar ________me, but I couldn't remember when and where I had heard it.


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He is ________ boy to go to school．


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The signal is ________ a pair of wires to the receiving telephone.


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