Add tags question to the following statements

4-10 ạ
----- Nội dung dịch tự động từ ảnh -----
III. Add tags question to the following statements:
1. Everyone realized the danger,
wrong...............?
..?
2. Nothing went
3. Let's sing a song,..............?
...
4. He needn't asy anything, ..............?
5. There was a notice board on the wall, ..............?
6.It never works very well, ..............?
7. The elevator isn't working today...............?
8. Neither of them offered to help you,
9. Liz has seen you befor, ..............?
10. Helen paints the paintings..............?
.?