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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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