1. energetic
2. Suddenly
3. disappointing
4. Polluted.
5. necessity
6. complaint( lời phàn nàn)
7. politely
8. regularly
9. effective
10. protection
11. heavily( be fined heavily: bị phạt nặng)
12. Prevention(sự phòng ngừa)
13. solar
14. conserve
15. dripping
16. electrician
17. worried
18. consumption
19. time-consuming
20. consumption
21. dripping
22. luxurious
23. shortage (sự thiếu hụt)
24. compared
25. disappointed
26. effectively
27. innovations
28. appliances( thiết bị)
29. satisfiedly
30. replacing
$\text{Chúc học tốt}$
