题目

The pen I       I       is on my desk, right under my nose.     A. think; lost         B. thought; had lost   C. think; had lost     D. thought; have lost   答案： B 句意为：我以为已丢了的钢笔却在我的桌子上，就在眼皮底下。thought 是过去时，“笔丢失了”是在“thought”之前，所以用过去完成时。

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