1.they/have/supper/at the moment

=> They are having a supper at the moment, aren't they?

2. i/be/best student

=> I am the best student, aren't I?

3. the browns/go/on holiday/next month

=> The browns will go on holiday next month, won't they?

4. chirst/catch/lots of fish/last month

=> Chirst caught lots of fish last month, didn't he?

5.mike/not be/ the doctor/ recently

=> Mike hasn't been a the doctor recentlt, has he?

6. george/ not enjoy/his work/the office

=> Georgy doesn't enjoy his work in the office, does he?

7.The children/have to do/a lot/homework
=> The children have to do a lot of homework, don't they?