d 42. frightening, fright 43. frightening, frightened 44. types 45. types 46. sprang 47. springs 48. killed 49. killing 50. lay 51. sleepy , asleep 52. sleeping 53. attracts 54. attractive 55. interruption 56. panicky 57. panicked 58. freedom 59. freely 60. free 61. free, freedom 62. silence, silent 63. silently 64. crashed 65. crash 66. decision 67. decision 68. finished 69. done 70. gone 71. frighten 72. noise 73. attracts 74. safety 75. dead 76. attractive 77. safely 78. feet 79. essful 80. saved 81. loudly 82. disappear 83. invented 84. powerful 85. attractive 86. safety 87. redder 88. argued 89. truth 90. twentieth 91. friends 92. lost 93. Greece 94. harmless 95. thinker 96. dead 97. famous 98. faster 99. difficult, more difficult , the most difficult 100. thinkerР北郊学校备课组陈燕,秦柳,周惠珍老师供稿