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          - Has your friend completed his design?   - Not yet. He ________ on it last night.
          A．workedB．has worked C．is workingD．was working
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          D

          試題分析：句意：—你的朋友完成了他的設(shè)計(jì)了嗎？—還沒有。昨晚他一直在做。A. worked一般過去時(shí)，說明過去的情況，與現(xiàn)在無關(guān)；B. has worked現(xiàn)在完成時(shí)，說明現(xiàn)在已經(jīng)完成；C. is working現(xiàn)在進(jìn)行時(shí)，表示現(xiàn)在正在做的事；D. was working過去進(jìn)行時(shí)，表示過去某個(gè)時(shí)間或時(shí)間段內(nèi)正在做的事。分析句意可知用過去進(jìn)行時(shí)。故選D。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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