$\text{III}$
1. come
2. came..........was having
3. doesn't study
4. have
5. fly
6. fries
7. closes
8. went
9. didn't go
10. Did she get
11. burnt......was cooking
12. is playing
13.have spent........got
14. have worked
15. didn't drink
$\text{IV}$
1. C- was living
→ $\text{When+ QKĐ, S+was/were+ V-ing}$