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           --_______ will the meeting last?
           --_______ they reach an agreement.
          A．How long; Not until B．When; Not until 
          C．How long; Until D．When; Until 
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          C
          

          解析試題分析：句意：會議要開多久？直到他們達(dá)成協(xié)議。對一段時間的提問常用疑問詞how long；until直到；not…until直到……才，但通常不用not until，所以選C。
          考點：考查疑問詞。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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