For environmental reasons, we ________ as well take these waste products and have them recycled．


  1. A.
    should
  2. B.
    would
  3. C.
    might
  4. D.
    could
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I was deeply impressed by the noisy and crowded ________ in the street when I was a child．


  1. A.
    scene
  2. B.
    scenery
  3. C.
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After a long trip he is ________ tired and ________ sleeping now.


  1. A.
    deadly; dead
  2. B.
    too dead; dead
  3. C.
    deadly; deadly
  4. D.
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I enjoy listening to the songs _______by ourselves.


  1. A.
    sung
  2. B.
    sing
  3. C.
    was sung
  4. D.
    singing

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The box has been moved. Someone ________ here last night.


  1. A.
    must be
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  3. C.
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________ he had heard the news, he would have told us.


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  2. B.
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  3. C.
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I'm sorry I'm late , I was in a meeting and couldn't ________.


  1. A.
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    get along
  3. C.
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A cultural relic is something that has _________ for a long time．


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