—Oh, it's so cold. We haven't had such a severe winter for so long, _______ we?—Yes, the forecast says it's going to get worse _______ it warms up.
Parents and teachers always think students should spend more time on their studies, but students themselves think _____.
The naughty boy found himself ____ by his teacher when he looked up from his picture book.
Don’t call Mr. Wang at nine tomorrow. He ____ to a lecture on the reform of the college entrance examination.
It’s always cold in Zhejiang in winter, but it ____ be warm at times.
A good teacher has to be able to____ the students’ interest in his or her class for long.