Hoàn thành các câu sau

I- TAG QUESTION
1. They have already read this article,.....
2.They have a new car ....?
3. The house was very comfortable,.......
4. You weren't at home
5. Mr Nam is never late,..
....?
...?
6. You shouldn't stay up late,.....
7. The children watched tv last night,
8. The children didn't go out,...
9. Nobody can solve this problem..
10. They never go by bus ,....
.....?
?
....?
....?
.......?
......?