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           I’m sorry to keep you ______ for an hour. Now let’s begin our work.
          A．to waitB．waitingC．waitD．waited
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          B

          試題分析：句意為：很抱歉讓你等了一個小時�，F(xiàn)在讓我們開始工作吧。keep sb doing是習(xí)慣用法，表示“一直做某事”，故選B。
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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