The factory was built in a secret place, around ________ high mountains.

I like your new leather boots! —Thanks．I had to try on almost a dozen pairs ______ I decided to get them

For a foreigner like me, the more I learn about Chinese history, ___I enjoy living in China

I’m not sure whether this is the room ________ she left her dictionary.

Are there any English story books for us students in the library ? — There are only a few, _______.