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          The government is _____ and will take the necessary steps to maintain security and stability.
          A．on the alertB．out of controlC．on guardD．in vain
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          A
          on the alert (="alert;" watchful; careful) 警惕，小心：Drivers must be on the alert for traffic signals. (="Drivers" must be especially careful to see signals when driving a car.) (司機必須密切注視交通信號。) out of control 失去控制；on guard站崗；in vain 徒勞，無效。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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