Giúp em bài này với ạ

17. unaware

18. respectful

19. equipment

20. surrounding

21. understandable

22. encourage

23. slippery

24. citizenship

25. unfriend

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30. unveil

31. risky                                

32. emptiness                     

33. liberate

34. freedom                          

35. careful                            

36. outdo

37. understanding                  

38. uncork                            

39. misspell

40. forecast