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				17．A．before         B．when          C．since          D．until			【查看更多】
			


		
     
    


		
    
		
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    ---________ when does that shop stay
open?       ---About midnight.
    


    
 
    
  
  
    A．Since
    
      		
  
  
    B．Until
    
      		
  
  
    C．Before
    
      		
  
  
    D．After
    
      		
 
    

    


     
    

			
    
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    Rick has learned a lot about Chinese culture _____ he came to China.
    A．before  B．when C．until D．since 
    

			
    
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    It's five years ________ I came to this town．
    

    

    [　　]
    

    A．since
    

    

    B．when
    

    

    C．before
    

    

    D．until
    

    

    

			
    
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    The foreign teachers have worked in that school ________ last year．
    

    

    [　　]
    

    A．since
    

    

    B．when
    

    

    C．before
    

    

    D．until
    

    

    

			
    
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    — You speak French so well. How long have
you learned it? 
    


    — ________ I was fifteen.
    


    
 
    
  
  
    A．Until
    
      		
  
  
    B．Since
    
      		
  
  
    C．When 
    
      		
  
  
    D．Before
    
      		
 
    

    


     
    

			
    
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