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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			【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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