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          —Hi, John, I have not seen you for a long time. What _______ recently? 
          —Carrying on some research on wildlife.

          A. have you been doing 
          B. have you done 
          C. were you doing 
          D. did you do 
          			
          

			
          
				
          
		
		
	
          
		
          
			
          
				
          
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				相關(guān)習(xí)題
			
          	
						
          
			
          
				科目：初中英語(yǔ)
				來源：期末題
				題型：單選題
			
          
									
          —Hi, John, I have not seen you for a long time. What _______ recently? 
          —Carrying on some research on wildlife.
          

          [     ]
          A. have you been doing 
          B. have you done 
          C. were you doing 
          D. did you do 
          

			
          
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