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          Becky took a photo of her friends while they _________ computer games.
          A．playB．a(chǎn)re playingC．were playingD．have played
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          C

          試題分析：句意：Becky給她的朋友照了一張相當(dāng)他們正玩電腦游戲時(shí)。when 引導(dǎo)的從句表示主從句的動(dòng)作同時(shí)發(fā)生，從句用進(jìn)行時(shí)，或從句的動(dòng)作發(fā)生在主句動(dòng)作之前，主句用將來(lái)時(shí)，從句用一般現(xiàn)在時(shí)。while 引導(dǎo)的從句表示“當(dāng)……過(guò)程中”，主句動(dòng)作在從句動(dòng)作發(fā)生的過(guò)程中發(fā)生，從句一般用進(jìn)行時(shí)。該句強(qiáng)調(diào)在玩電腦的過(guò)程中照的相。事情發(fā)生在過(guò)去，故用過(guò)去進(jìn)行時(shí)態(tài)，所以選C.
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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