In summer, Chengdu is very ______. 

What’s your sister drinking at the moment ?

----Why did you vote for Maggie? ----Because she is very ____________. She always shares things with others.

—Can I go down this street?—No. You’d better(最好) go along Bridge Street. The street is too _______ now.

The air in Lanzhou is getting much _____ now than a few years ago .