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          精英家教網 > 初中英語 > 題目詳情
          
			
          
				
          .Your son has kept _________ for two hours. You’d better ask him to have a rest.
          A．studyB．studiedC．to studyD． studying
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				
          D
          keep doing 保持不間斷地做某事
          keep to do  keep要求 -ing, 沒有 to do 形式
          故選D.
          				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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