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          精英家教網 > 初中英語 > 題目詳情
          
			
          
				
          My brother came back home while I           homework.
          A．am doingB．did
          C．was doingD．were doing
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          C

          試題分析：句意為：我正在做作業(yè)的時候哥哥回來了。根據(jù)語境，這里表示的是一個過去某一時刻正在進行或發(fā)生的動作，應用過去進行時。故應選C。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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