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          —The train is due to leave at 7：50.
          —________ we fail to arrive there in time?
          —I'm afraid you'd better go in a hurry.
          A．What ifB．As if
          C．Even ifD．Only if
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          A
          A　[考查省略。what if 要是……該怎么辦？as if 好像；even if即使；only if 只有在……條件下。第二句可還原為“What shall we do if we fail to arrive there in time？”。]
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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