-Computers are used in every walk of life mow. -Bat only in recent years to use personal computers. A. when people have started B. when have people started C. people have started D. have people started 【查看更多】

 

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—Computers are used in every walk of life mow.        
   —Bat only in recent years _____ to use personal computers.         
  A. when people have started          B. when have people started     
  C. people have started               D. have people started     

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