Here are the completed sentences with the correct forms of the verbs:

1. You know my brother, **don't you**?
2. We don’t need to go to the supermarket today, **do we**?
3. They are going home from work, **aren't they**?
4. She will finish it soon, **won't she**?
5. I’m intelligent, **aren't I**?
6. Nam will come tonight, **won't he**?
7. We have finished these tasks, **haven't we**?
8. David works in a coffee shop, **doesn't he**?
9. You like orange juice, **don't you**?
10. I can come this weekend, **can't I**?
11. She is married to Henry, **isn't she**?
12. We have never seen that film before, **have we**?
13. Nothing came in the post, **did it**?
14. This method will work well, **won't it**?
15. Nobody knows the truth, **do they**?
16. You don’t know any of them, **do you**?
17. You haven’t got $100 to lend me, **have you**?
18. It’s a beautiful skyscraper, **isn't it**?
19. They are ready to take a boat trip, **aren't they**?
20. Open the gate for me, **won't you**?