Put a question tag on the end of these sentences

Put a question tag on the end of these sentences.
1. You have heard about that,
...
2. Nam did the work well.....
3. He didn't have to speak to me,...
4. He won't fall down,...
5. You wouldn't like the window open,...
6. He used to beat his wife,...
7. She came very late,...
8. Come and see me tomorrow,...
9. That's the sort of thing you would do,...
10. I'd better go,...
11. There's an examination tomorrow,...
12. She's been studying English for two years....
13. You can't play tennis today...