DETECTIVE FUN
Knock at the door
可疑的“敲门客”。
A young woman was traveling in a city for the first time. She stayed in a hotel in the eastern part of the city.
The hotel worker gave her a single (单人) room and said that all the rooms on her floor were also single.
- 对本期电子报订户、有效期内的VIP教师会员和本学期初一尊享卡用户，我们开放所有内容：
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- 订阅电子报，请点这里；
- 激活VIP教师卡，请点这里；
- 激活21英语尊享卡，请点这里。
