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          His father has worked in this factory _____ he came here in 1980.
          A. since        B.  for        C.  when
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          A

          試題分析：since由于，自從……以來(lái)；for為了，對(duì)于；when當(dāng)……時(shí)。句意：自從他1980年到這兒以來(lái)，他的父親就在這家工廠工作。故選A。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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