Here are the suitable question tags for the sentences provided:

1. Let's go shopping at Saigon Coop Mart, **shall we**?
2. Children should drink a lot of milk and fruit juice, **shouldn't they**?
3. Bring your camera with you to the party, **won't you**?
4. Remember to buy your mother some sugar on your way home, **won’t you**?
5. You think the Internet is a means of education, **don’t you**?
6. You ought to go now, **oughtn’t you**?
7. I think she won't come to your party, **will she**?
8. What a nice dress, **isn't it**?
9. I think it is going to rain, **isn't it**?
10. He said that his father was a doctor, **didn't he**?
11. Everything is all right, **isn't it**?
12. She met nobody at the party, **did she**?
13. Don't forget to turn off the lights before going out, **will you**?
14. Be careful with that man, **won't you**?
15. Someone had come to our room, **hadn't they**?

Feel free to let me know if you need any further assistance!