19. We all are in good health, which is of great importance to us.

18. He was away from school because of a serious illness.

17. His father is a laid-off worker with only a total income of 300 yuan per month.

16. Allow me to introduce my friend Miss Wood to you.

15.. He is leading an independent life . He lives on his own.

14.. From that she learned that it was not necessary to wear their best clothes on such an infomal gathering.

13. Peter, this is the first time you meet us,. Could you make an introduction first?

12.. I’m sorry for having interrupted your conversation. Now please go on.

11. If you keep interrupting with silly questions, I will not continue my story.

9.We have interviewed ten people for the job. They are all pretty good.

10, It is illegal to sell tobacco to someone under sixteen.