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				14．They have made so great progress     A．three  years ago                    B．for three yearsC．in  the past three years                 D．before three years			【查看更多】
			


		
           
          


		
          
		
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          They have made so great progress      .
          


                          A.
three years ago                                             B.
for three years
          


                          C.
in the past three years                                D.
before three years
          


           
          

			
          
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          They have made so great progress      .
          


                          A.
three years ago                                             B.
for three years
          


                          C.
in the past three years                                D.
before three years
          


           
          

			
          
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          They have made so great progress      .
          A．three years agoB．for three years
          C．in the past three yearsD．before three years
          

			
          
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          They have made so great progress            . 
          

          [     ]
          A. three years ago 
          B. for three years 
          C. in the past three years 
          D. before three years 
          

			
          
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          They have made so great progress      

          1. A.
            three years ago
          2. B.
            for three years
          3. C.
            in the past three years
          4. D.
            before three years
          

			
          
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