The students ___ busily when Miss Brown went to get a book she ___ in the office.
The country life he was used to _________ greatly since 1992.
I’ve found that many people are still in _____ habit of writing silly things in _____ public places.
______________, I think, and the problems could be settled.
—What’s the matter with Marsa ? —Well, her parents wouldn’t allow her to go to the party, but she still ___________.
It is ________ the customers’ needs that has made chain stores so popular in big cities in China.