About 60 percent of the students ________ from the south; the rest of them ________ from the north and foreign countries.

Why do you suggest we buy a new machine?— Because the old one has been damaged ______[ ]

The Changjiang River is _____ than anyother river in China.

This article may be some advice about how to _________oneself in society.

I like getting up very early in summer. Themorning air is so good _________.