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				A． until          B．unless          C． as             D． if			【查看更多】
			


		
     
    


		
    
		
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    I usually sleep with the window open       it’s very cold． 
      
    A．until                       B．unless                     C．a(chǎn)s                          D．if
    

			
    
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    You'll miss the train ________ you hurry up.
    

    [　　]
    

    

    A．unless
    B．a(chǎn)s
    

    C．if
    D．until
    

    

    

			
    
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           our manager objects to Tom's joining the club, we shall accept him
as a member
    


    
 
    
  
  
    A．Until
    
      		
  
  
    B．Unless
    
      		
  
  
    C．If
    
      		
  
  
    D．After
    
      		
 
    

    


     
    

			
    
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    It is known to all that ________ you exercise regularly, you won’t stay in good health．
    

    

    [　　]
    

    A．unless
    

    

    B．if
    

    

    C．until
    

    

    D．as
    

    

    

			
    
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    --What do you think of our school basketball team?
    --- They’re going to lose the match           they improve their game.
    A．if B．until C．unless D．a(chǎn)s 
    

			
    
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