20.-You’re going to publish my book. Are you serious?
- . It’s to be published next month.
A.No, I am not B.No, I was just joking
C.Yes, I do D.Yes, I have never been more serious
19.Low-carbon lifestyle is of great benefit to improve the world environment. can be
enjoyed from it until you have a deep understanding of it,however.
A.Something B.Nothing C.Few D.Much
18. -Jack isn't a football coach, is he?
- .
A. No, but he was. B. Yes, he isn't
C. Yes, he wasn't D. No, he is