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				27．I have been          English         ten  years．  A．study,for      B．to study,since   C．studying,for			【查看更多】
			


		
           
          


		
          
		
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          I have been ______ English _______ ten years.
          


          A. study; for     
B. studying; since      C. studying ;
for    
          


           
          

			
          
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          I have been ______ English _______ ten years.
          


          A. study; for     
B. studying; since      C. studying ;
for    
          


           
          

			
          
				查看答案和解析>>
			
          
		
          
				
          
									
          I have been ______ English _______ ten years.
          A. study; for      B. studying; since      C. studying ; for   
          

			
          
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          I have been ______ English ______ ten years. 
          

          [     ]
          A. study; for 
          B. studying; since
          C. studying; for 
          D. to study; since 
          

			
          
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          I have been ______ English _______ ten years

          1. A.
            study; for
          2. B.
            studying; since
          3. C.
            studying ; for
          

			
          
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