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          Look! What a clean room! Who _______it ?
          A．has cleanedB．is cleaning
          C．will cleanD．cleaned
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          A

          試題分析：句意:看！多么干凈的房間啊!誰(shuí)打掃的？結(jié)合語(yǔ)境可知下文描述的是現(xiàn)在已經(jīng)完成的動(dòng)作，故用現(xiàn)在完成時(shí)態(tài)，故選A。
          點(diǎn)評(píng)：英語(yǔ)中的時(shí)態(tài)主要是借助于時(shí)間狀語(yǔ)與上下文語(yǔ)境來(lái)進(jìn)行判斷。解答此類題型，首先要注意句子中的時(shí)間狀語(yǔ)，如果沒有則要通過(guò)分析上下文，結(jié)合語(yǔ)境來(lái)判斷句子的時(shí)態(tài)。英語(yǔ)疑問(wèn)句中一般具有時(shí)態(tài)上的對(duì)應(yīng)關(guān)系，可以結(jié)合這一特點(diǎn)進(jìn)行區(qū)分。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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