◎ 题干
— You may find the key to the maths problem on page 107.
— Ah, it's so simple. I wonder why I _____ of that.
[     ]

A. hadn't thought
B. haven't thought
C. didn't think
D. wasn't thinking

◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“— You may find the key to the maths problem on page 107.— Ah, it's so simple. I wonder why I _____ of that. [ ]A. hadn't thought B. haven't thought C. d…”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。