Mn giúp e với , e cảm ơn mn nh
6. inventions
7. pollution
8.disappointed
9. introduced
10. friendly
11. famous
12. Scientists
13. possibility
14 . depth
15. ability
16.experienced
17. publishing
18. cook
19. improvement
20. beginners
21. fluently
22. information
23. informative
24. encouraged/ encourages
25. strength
26. disappearance
27. permission
28. cultural
29. improve
30. information
31. advertise
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