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          He __________ well in the exam last week, so he __________ hard now.
          A. did, studied    
          B. didn't, is studying   
          C. didn't do, is studying
          D didn't, studying   
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          C
          句意：上周的考試他做的不好，因此現(xiàn)在他正在努力學(xué)習(xí)。根據(jù)句意可知前半句考查一般過去時，后半句考查現(xiàn)在進行時的用法，故選C。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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