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          ---- Do you know Jack well?
           ---- Certainly, we _________ friends since ten years ago.
          A．wereB．have madeC．have becomeD．have been
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          D
          考查時(shí)態(tài),句意:你很了解杰克嗎?_當(dāng)然了,自從十年前我們就成為了好朋友.結(jié)合語(yǔ)境可知下文描述的是從過(guò)去一直持續(xù)到現(xiàn)在的動(dòng)作,故用現(xiàn)在完成時(shí)態(tài),選項(xiàng)BC表示瞬間動(dòng)作,故選D.
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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