7. Chinese officials quickly shut down Wuhan market, ________?
B. didn't they

8. There are no easy ways to succeed, ________?
C. are there

9. No one is a better cook than my sister, ________?
D. are they

10. They'll buy a new apartment, ________?
A. won't they

11. This house is not safe, ________?
A. is it

12. Ba rarely goes out at night, ________?
 B. does he

13. Someone wants a drink, ________?
 D. don't they

14. What you have just said is not true, ________?
 B. isn't it

15. Lucy has been studying English for 4 years, ________?
 C. hasn't she

16. It seems that you are telling me a lie, ________?
A. aren't you

17. You need to take a rest, ________?
 D. don't you

18. Let me take care of you, ________?
  A. may I

19. Nobody phoned, ________?
A. did they

20. I should keep silent, ________?
  A. shouldn't I