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				23．I Was doing my homework          my  mother was cooking．A．a(chǎn)fter            B．because          C．While           D．a(chǎn)s soon as			【查看更多】
			


		
           
          


		
          
		
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          I was doing my homework ___________ my mother was cooking．
            
          A．a(chǎn)fter            B．because              C．while             D．a(chǎn)s soon as
          

			
          
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