Ⅲ. isn't it, isn't it, didn't he, doesn't it, doesn't he, don't they, , doesn't they, weren't it, won't you, aren't you
Ⅳ. 1. Have been
2. Had become
3. Has bought
4. Has just caught
5. Chose
6. Fought
7. Did he drive?
8. Have you gone
9. Have been having
10. Have been learning
11. Didn't ask
12. Has he called
13. Has already checked
14. Have you ever been
15. Did it happen
16. Always wanted