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          Tim’s mum is worried _______ her son’s
eyesight as he plays online games too much. 
          


          
 
          
  
  
          A．for
          
            		
  
  
          B．a(chǎn)bout
          
            		
  
  
          C．with
          
            		
  
  
          D．of
          
            		
 
          

          


           
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				【答案】






          B
          


          【解析】be
worried about 固定搭配 擔(dān)心…
          


           
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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