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				 ―Inventors  have changed the way we live.―So they are famous for the great things they    .A. do         B. have done    C.  are doing       D.  had done			【查看更多】
			


		
     
    


		
    
		
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    ---Inventors have changed the way we live.
    ---So they are famous for the great things they ________.

    1. A.
      do
    2. B.
      did
    3. C.
      are doing
    4. D.
      had done
    

			
    
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    — Inventors have changed the way we live. 
    — So they are famous for the great things they _____. 
    

    [     ]
    A. do 
    B. did
     C. are doing 
    D. had done 
    

			
    
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    —Inventors have changed the way we live.
      
    —So they are famous for the great things they ___.
      
    A. do                B. have done        C. are doing              D. had done
    

			
    
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