◎ 题干
— Hi, Vera, have you checked the account yet?
— Certainly, I ______ it five times even though you told me to do it twice.
[     ]
A. checked    
B. will have checked    
C. have been checking    
D. had checked
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“— Hi, Vera, have you checked the account yet?— Certainly, I ______ it five times even though you told me to do it twice.[ ]A. checked B. will have checked C.…”主要考查了你对  【一般过去时】  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。