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          ---Must we donate our pocket money to the poor right now?
          ---No, you _______. You can think it over and do it before Friday.
          A．mustn’tB．needn’tC．can’tD．couldn’t
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          B
          考查must的否定回答.must含義是必須,一定;mustn’t含義是禁止.故must的否定回答,一般借助于needn’t和don’t have to,結(jié)合前文no,可知本句為否定回答.結(jié)合所給選項(xiàng),可知選B.
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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