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				 I had done my homework        the light went out.  A.  as            B. until         C.  while        D.  when			【查看更多】
			


		
           
          


		
          
		
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          I had done my homework ______ the light went out. 
          

          [     ]
          A. as 
          B. until 
          C. while 
          D. when 
          

			
          
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