1) They behave badly all the time, don't they?

2) What a gorgeous dress she bought!

3) What a lovely baby they have!

4) Children walk so slowly, don't he/she?
5) It's a wonderful day to stay healthy, isn't it?

6) He does sport a lot, doesn't he?

7) What a delicious food you cook!

8) He played games all day, isn't he?

9) What a great news I've read!

10) What a very stressful job they have!

11) You are so lucky, aren't you?

Если вы увидели у меня ошибку, тогда пишите в комментариях, я исправлю.