^{_{6. B}}

^{_{7. B}}

^{_{8. C}}

^{_{9. D}}

^{_{10. A}}

^_collecting

^{_{1. C}}

^{_{2. B}}

^{_{3. A}}

^{_{4. D}}

^{_{5. B}}

^{_{6. C}}

^{_{7. D}}

^{_{8. A}}

^{_{9. C}}

21. B

22. A

23. B

24. D

25. C

26. B

27. D

28. A

29. B

30. A

^{_{1. height}}

^{_{2. most beautiful}}

^{_{3. friends}}

^{_{4. teachs}}

^{_{5. jogging}}

^{_{6. famous}}

^{_7. friendly}

^{_{8. invited}}

^{_{9. beautifully}}

^{_{10. pollutants}}

GP là điểm do CTV tick đúng cho mk hoặc do mk thi ở những cuộc thi do hoc24 

1. proud

2. singer

3. work

4. friendliness

5. exciting

6. different

7. pronounciation

8. windy

9. unhealthy

10. flights

^{_{10. B}}

^{_{11. B}}

^{_{12. D}}

^{_{13. A}}

^{_{14. C}}

^{_{15. D}}

^{_{16. B}}

^{_{17. A}}

^{_{18. B}}

^{_{19. A}}

^{_{20. A}}