◎ 题干
— Alice, you look puzzled. Have you understood it?
— Yes, I _____ another problem just now.

[     ]

A. have thought of
B. thought of
C. was thinking of
D. had thought of
◎ 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“— Alice, you look puzzled. Have you understood it?— Yes, I _____ another problem just now.[ ]A. have thought of B. thought of C. was thinking of D. had th…”主要考查了你对  【过去进行时】  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。