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          If the green light doesn’t come on, you ______ go across the street.
          A．mustB．needn’tC．mustn’tD．have to
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          C
          本題根據(jù)題意需要的是禁止的意思，故選C
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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