1. amazed by
2. In order not to
3. when -> that
4. for -> to
5. How long did they stay
6. could
7. Minh likes
8. for saving -> to save
9. had died -> died
10. it is going to
11. finish
12. if -> unless
13. had gone -> would have gone
14. don’t have -> had
15. will visit
16. would forget
17. to decide
18. plays tennis
19. use to music -> use music
20. importance -> important