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				21．A．mustn't        B．couldn't        C．needn't          D．shouldn't			【查看更多】
			


		
           
          


		
          
		
          題目列表(包括答案和解析)
          

		
		
          

          


          
	
          				
          
									
          —Must I finish my home work today?
            
          —No, you _____. You may finish it tomorrow.
            
          A．mustn’t              B．shouldn’t              C．needn’t               D．couldn’t
          

			
          
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          Though he explained it carefully, I ________ understand him．
          

          

          [　　]
          

          A．couldn’t
          

          

          B．mustn’t
          

          

          C．shouldn’t
          

          

          D．needn’t
          

          

          

			
          
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          — Must I finish that work today?
          


          — No, you _____. You may finish it in three
days.
          


          
 
          
  
  
          A．mustn’t
          
            		
  
  
          B．needn’t
          
            		
  
  
          C．shouldn’t
          
            		
  
  
          D．couldn’t
          
            		
 
          

          


           
          

			
          
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          ——Can I walk across the road now, mum?
          


          ——No, you_______. You have to wait until the light
turns green.
          


          A．couldn't          B．shouldn't          C．mustn't           D．needn't
          


           
          

			
          
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          (2006年徐州市)
          

          --- Must I finish that work today?
          

          --- No, you ________. You may finish it in three days.
          

          [　　]
          

          

          A．mustn't
          B．needn't
          

          C．shouldn't
          D．couldn't
          

          

          

          

			
          
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