30. They used to live in these mountain areas ,_____________ they?

　 A. did　　 B. didn’t　　　　 C. used　　　 D. weren’t

29. She is going to see you ,_________ she ?

　 A. isn’t　　 B. is　　　　　 C. don’t　　 D. doesn’t

28. Everyone wants to be chosen for the work, ____________?

　 A. isn’t he　 B. does he　　 C. don’t they　　 D. do they

27. People use tag question (反意疑问) because they are not sure of what they have said _____________they?

　 A. do　　 B. did　　 C. didn’t　　 D. don’t

26. Jack seldom goes to the park, _______________?

　　 A. does he　　 B. doesn’t he　　 C. does Jack　　 D. doesn’t Jack

25. He was hardly able to stand on his feet after the car accident,__________ he?

　　 A. could　　 B. couldn’t　　 C. was　　 D. wasn’t

24. It’s the first time that she has been to the United States, ____________?

　 A. isn’t she　 B. isn’t it　　 C. hasn’t she　　 D. hasn’t it

23. Nothing the boy did was right, _______ it?

　 A. was　　 B. did　　 C. wasn’t　　 C. didn’t

22.I don’t think it is going to rain, _____________ it?

　 A. do I　　 B. do you　　 C. is　　 D. isn’t

21. Let John finish the work all by himself,___________?

　　 A. shall we　 B. will you　　 C. do you　 D. do we