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          I was doing my homework _______ my father was reading newspapers.
          A. how              B. while                C. if  
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          B

          試題分析：句意：當我爸爸在讀報紙時，我正在做作業(yè)。while正當……時候。故選B。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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