Sure, here are the suitable question tags:

1. Lan enjoys watching TV after dinner, **doesn't she**?
2. Tam didn’t go to school yesterday, **did he**?
3. They’ll buy a new computer, **won’t they**?
4. She can drink lots of tomato juice every day, **can’t she**?
5. She may not come to class today, **may she**?
6. We should follow the traffic rules strictly, **shouldn't we**?
7. Your mother has read these fairy tales to you many times, **hasn't she**?
8. He seldom visits you, **does he**?
9. You've never been in Italy, **have you**?
10. That’s Bob, **isn't it**?
11. No-one died in the accident, **did they**?
12. I'm supposed to be here, **aren't I**?
13. Nothing is wrong, **is it**?
14. Nobody called the phone, **did they**?
15. Everything is okay, **isn't it**?