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				 Frank is working late again. This is the first time this week he’s had to study late,     ?  A. isn’t heB. hasn’t itC. hasn’t heD. isn’t it			【查看更多】
			


		
           
          


		
          
		
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          Frank is working late again. This is the first time this week he's had to study late,_____?   
          

          [     ]
          A. isn't he       
          B. hasn't it     
          C. hasn't he      
          D. isn't it
          

			
          
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