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          --- ____________ you seen the 3-D film Titanic yet?
           --- Yes. I __________it a few days ago.
          A．Did , sawB．Have, sawC．Do, have seenD．Have, have seen
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          B
          yet是現(xiàn)在完成時的標志詞。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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