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				34．A．before  B．a(chǎn)fter    C．until       D．while			【查看更多】
			


		
           
          


		
          
		
          題目列表(包括答案和解析)
          

		
		
          

          


          
	
          				
          
									
          It is impolite to
leave            
the meeting finishes. 
          


          
 
          
  
  
          A．a(chǎn)fter
          
            		
  
  
          B．before
          
            		
  
  
          C．until 
          
            		
  
  
          D．while
          
            		
 
          

          


           
          

			
          
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          It is impolite to leave             the meeting finishes. 
            
          A．a(chǎn)fter               B．before                 C．until                D．while
          

			
          
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          ________ we were singing happily, he came in．
          

          

          [　　]
          

          A．While
          

          

          B．After
          

          

          C．Until
          

          

          D．Before
          

          

          

			
          
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          I met your brother ______ I was walking in
the street.
          


          
 
          
  
  
          A．before
          
            		
  
  
          B．until
          
            		
  
  
          C．a(chǎn)fter
          
            		
  
  
          D．while
          
            		
 
          

          


           
          

			
          
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          ______ Kathy was watching TV, her mother asked her to
go shopping.
          


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


           
          

			
          
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