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          —Must I go through the radiation (輻射) check when I come back from Japan at the airport these days?
          —Yes, you ______. 
          A．canB．mayC．mightD．must
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          D
          情態(tài)動(dòng)詞。情態(tài)動(dòng)詞must意為“必要”時(shí)，引導(dǎo)的問(wèn)句的肯定回答用must。 
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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