=> 1. B where 2. C when 3. C which 4. A whose 5. A which 6. B who 7. B which 8. A giới từ + whom 9. B that 10. D who 11. C whose
12. B whose 13. B where 14. D where 15. D where 16. D why 17. D where 18. A who 19. D which 20. A who 21. B whose 22. B where 23. B which 24. D when 25. C who
26. C whose 27. B which 28. B which 29. A when 30. D why 31. B where 32. D whose 33. C that
