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          【題目】Hey, you ________ at the computer all day. You should really take a break now.
          A.have been sittingB.were sitting
          C.did sitD.are sitting
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          【答案】A
          【解析】
          考查現(xiàn)在完成進(jìn)行時(shí)態(tài)。句意：嘿，你整天都坐在電腦前。你現(xiàn)在真的應(yīng)該休息一下。結(jié)合句意可知，表示從過去開始一直進(jìn)行的動(dòng)作，用現(xiàn)在完成進(jìn)行時(shí)態(tài)，故選A。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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