◎ 题干
Yesterday Frank worked deep into the night, this is the   second time this week he's stayed up, ____  ?    
[     ]
A. didn't he          
B. isn't it        
C. isn't this  
D. hasn't he
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“Yesterday Frank worked deep into the night, this is the second time this week he's stayed up,____ ?[ ]A. didn't heB. isn't it C. isn't this D. hasn't h…”主要考查了你对  【一般现在时】【反意疑问句】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。