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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