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          28. The officer was very concerned ________ the latest development in the case because he was concerned ________ it.
          A．a(chǎn)bout; inB．for; aboutC．with; forD．in; with
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          A

          28．A(解析：考查介詞。be concerned about“關(guān)心”．be concerned in “涉及，與……有關(guān)”。選A。)
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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