◎ 题干
---- Tony, you look puzzled. Have you understood me ?   
---- I’m sorry. I _____ another problem just now.
A.thought ofB.am thinking of
C.had thought ofD.was thinking of
◎ 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“ ---- Tony, you look puzzled. Have you understood me ? ---- I’m sorry. I _____ another problem just now.A.thought ofB.am thinking ofC.had thought ofD.was th…”主要考查了你对  【一般现在时】【将来进行时】【过去完成进行时】【过去将来时的被动语态】  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。