sos giúp mình

12. How interesting the games are, aren't they?
13. People think she tells lies, don't they?
14. What a long river, isn't it?
15. How intelligent you are, aren't you?
16. Nobody has arrived yet, have they?
17. Everybody looked so miserable, didn't they?
18. Nobody's got to leave early, have they?

Exercise 4
1. Everybody will be there, won't they?
2. You'd rather not tell me, would you?
3. He'd better try harder, hadn't he?