1. B??2. D??3. A??4. B??5. C??6. C??7. A??8. A??9. D??10. B
11. C?12. C?13. B?14. D?15. B?16. A?17. A?18. D?19. C?20. D
21. C?22. D?23. B?24. A?25. D?26. B?27. B?28. A?29. C?30. B
31. C?32. A?33. B?34. C?35. A?36. D?37. B?38. D?39. A?40. C
41. B?42. D?43. C?44. B?45. A?46. C?47. B?48. A?49. D?50. A
51. D?52. B?53. D?54. C?55. C?56. D?57. A?58. A?59. B?60. D
61. B?62. C?63. D?64. A?65. B?66. A?67. C?68. C?69. D?70. B
71. hard ? harder?72. being ? were
73. their ? his?74. nothing ? anything
75. (earn) ? (earn) were?76. present ? absent
77. from ? for?78. hired ? fired
79. (that) ? (that) it?80. to ? /