问题
单项选择题
I found the book I （）I （）in the teachers' room! What a happy afternoon!
A. think; have found
B. thought; had lost
C. saw ; put
D. thought ; had taken
答案
参考答案：B
解析：
“丢书”的动作发生在“认为”的动作之前。故选B。
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