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          — Why didn’t you try your best to get on the subway?
           — I tried to, but it started moving ______ I could get on it.
          A．before B．a(chǎn)fter C．since D．if 
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          A
          

          解析試題分析：句意：——為什么你不盡最大努力坐地鐵呢？——我已經(jīng)盡力了，但是我還沒來得及登上地鐵，它就開始移動了。A. before 在……之前，還沒來得及； B. after 在……之后； C. since 自從；D. If如果。結合句意，故選A。
          考點：考查連詞的用法。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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