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          (2014·東北三校模擬)We had just covered half the journey________the engine failed and we could do nothing but wait for help.
          A．beforeB．since
          C．when　D．until
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          C
          句意為：我們剛走了一半這時發(fā)動機(jī)就出故障了，我們別無選擇只能等著救援到來。when就在這時；突然……。before在……之前；since自從；既然；until直到。
          答案：　C
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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