16. subjective, objective, positive, negative;

　　17. effective, efficient;

　　18. farmer, former/latter/later, formal;

　　19. effect, affect,/influence/impact infect

　　20. owe, own

　　21. start, startle

　　22. confirm,confine,confront,confuse,conform

　　23. continual,continuous;

　　24. successive,successful;/succeed/success

　　25. golf, gulf

　　26. appeal,appear

　　27. count,account

　　28. term,item

　　29. constant,instant;

　　30. unlike,dislike

　　31. personal,personnel;

　　32. staff;stuff;

　　33. sensitive,sensible;

　　34. fresh,flesh,flash

　　35. brush, blush ,flush, crash, clash,crush, dash,rush

　　36. down, dawn

　　37. deceive,conceive,receive,perceive

　　38. increase,decrease

　　39. comb,tomb

　　40. comedy, tragedy,strategy, remedy,/therapy

　　41. pessimist, optimist

　　42. negative, positive, active, passive, excessive, progressive, aggressive, exclude/exclusive,explosive,massive

　　43. coin/coil,soil,oil,

　　44. familiar,similar

　　45. economic,economical

　　46. electric,electrical

　　47. classic,classical

　　48. historic,historical

　　49. critic,critical of

　　50. mechanic,mechanical

　　51. majority,minority

　　52. source,resource

　　53. emit,submit,transmit

　　54. transfer, ,translate,transit,transport,transplant ,transform

　　55. inform sb of,reform,conform’

　　56. entertain,sustain,attain,maintain,retain,obtain,contain,detain

　　57. think,thank

　　58. epoch/era,ear

　　59. release,relieve,believe,relive,deliver

　　60. berry,cherry,merry.mary,marry,carry

　　61. cost, coast

　　62. border, bother

　　63. bride, bridge

　　64. dairy,daily, diary

　　65. bind/bound, abound,

　　66. breeze, freeze

　　67. sow, sew,saw,

　　68. brass,grass,glass,class

　　69. vacation,vocation