--- He didn’t go to the concert yesterday, did he?--- _____. He was busy studying for the test all day.
E - mail is very popular today. People hardly post letters, _____?
Our country ______the sixth population census(人口普查) already.
— Many people eat_____ meat than they did before. —Yes, that’s why they’re getting fatter and fatter.
The environment in our town is getting worse and worse,so many trees____.
Do you know ______in Japan?