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          —Another cup of tea?
          —No,thanks. I_______ be off. Gina is waiting for me.
          A. can b. must c. may
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          B
          考查情態(tài)動詞。can能; may可以 ；must 必須。句意：......我必須要走有了，Gina在等著我。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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