№3.
1. ..., are not you?
2. ..., have not you?
3. ..., is not it?
4. ..., have not you?
5. ..., does not it?
6. ..., did not you?
№4.
1. are they?
2. will we?
3. is it?
4. will you?
5. do they?
6. have they?
7. does he?
8. should they?
9. did you?
10. can they?