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          He _____ in this factory for 20 years already.
          A．will work B．works 
          C．has worked D．is working 
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          C
          

          解析試題分析：句意：他已經(jīng)在這家工廠工作20年了。結(jié)合語境可知本句描述的是從過去一直持續(xù)到現(xiàn)在的動作，故用現(xiàn)在完成時態(tài)。選C。
          考點：考查時態(tài)辨析
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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