21.--- ____ at the new school?

　　 --- Fine, I've got used to the life there and I've made some friends.

A. How are you　 B. How are you doing　 C. Are you getting on well　 D. How do you do

10.I think it my duty to do so.

9.We are reviewing our lessons, while he is reading a novel.

8.I like sports, and music as well.

7.The old man had a young man help him to get on the bus.

6.His family is a happy one.

5.Chairman Mao lived in this room fifty-seven years ago.

4.In winter, it’s colder in the north than in the south.

3.They go to the U.S every other year.

2.The lecture is about the education of America.