1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

E C A B D B A B A C B A B C A

21 22 23 24 25 26 27 28 29 30

B C C A B D A B C D

31 32 33 34 35 36 37 38 39 40 41 42 43 44 45

A B B C C C C C D D D D A D A

46 47 48 49 50 51 52 53 54 55 56 57 58 59 60

B B C C A D A D A C C A B D D

61 62 63 64 65

T T F T T

16. greener 17. advice 18. instead 19. stop 20. public

66. offered 67. ought 68. influences 69. inventions 70. dealt

71. spitting 72. pollution 73. developing 74. dead 75. producers

76. been on 77. How long

78. does harm 79. if/whether had

80. Neither has 81. had asked

82. food problem 83. being hungry