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          I had just stepped out of the bathroom and was busily drying myself with a towel ______ I heard the steps.
          A．whileB．whenC．sinceD．a(chǎn)fter
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          B

          試題分析：考查連詞：句意：我剛剛走出浴室正在用毛巾擦干自己，這時(shí)我聽見腳步聲。這里是在聽到腳步聲的那一刻，表示時(shí)間點(diǎn)，用when. While通常是表示時(shí)間段的，after通常是表示在…….之后。Since后跟時(shí)間點(diǎn)時(shí)，一般跟現(xiàn)在完成時(shí)連用。選B。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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