-- What made your skin look so terrible? --_______ to the sunlight for a long time. 

—How are you getting on with your work?  —Oh, I’m sorry. Things aren’t going so well as ______.

When _______ to our school, the new study methods are popular with all the students.

I’m going to Fuzhou tomorrow. Have you got anything ___ to your parents there?

In the reading room, we found her____ at a desk, with her attention____ on a book.