Don’t you think you’ve spent too much time playing computer games? Why not spend more time something useful? A. in; on B. in; in C. on; in D. on; on 查看更多

 

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Don't you think you've spent too much time _______ playing computer games? Why not spend more time _______ something useful?


  1. A.
    in; on
  2. B.
    in; in
  3. C.
    on; in
  4. D.
    on; on

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