题目内容：
第47题应选：
A．in B．at
C．by
参考答案：
答案解析：
单选题：第47题应选：
- 题目分类：公共英语一级
- 题目类型：单选题
- 查看权限：VIP
B．at
C．by
B．at
C．by
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Where did she found her book? A．Under her bed. B．On her bed. C．Under her desk.
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Jack arrived at the railway station at 4 o'clock in the afte
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