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          The robber was caught by two men ______ police uniform _________.
          A．in; at the onceB．in; at onceC．on,; at the onceD．on; at once
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          B
          本題的含義是穿在警察制服的兩個人立刻抓住了搶劫犯，in表示穿什么衣服，at once表示立刻的意思，故本題選B。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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