1. that
2. who
3. whom
4. who
5. although
6. that
7. on
8. didn't he
9. at
10. lift
11. along
12. struck
13. was damaged
14. since
15. up/in
16. tornadoes
17. earthquake
18. inexperienced
19. preparations
20.  scientists
21. disastrously
22. volcanic
23. luckily
24. destruction
25. doesn't she
26. does he
27. If I didn't have money, I will not buy a new phone.
28. If you cut trees, our city will be in flood.
29. The boy is crying because his bike was stolen.
30. The women that are talking would like to be met by me(em ko chắc)

=>
1. that
2. who
3. whose
4. who
5. Although
6. that
7. on
8. doesn't he
9. at
10. blow
11. along
12. struck
13. was damaged 
14. since
15. up/in

16. Tornadoes
17. Earthquake 
18. experienced 
19. preparations
20. scientists
21. disastrously
22. volcanic
23. Luckily
24. destruction
25. doesn't she
26. does he
27. If I didn't have money, I wouldn't buy a new phone.
28. If we don't cut trees, our city won't be in flood.
29. The boy whose bike was stolen is crying.

30. The women whom I'd to meet here are talking.