Part V Cloze
62. B)notion 63. C)before
64. B)on
65. A)proposed
66. D)evidence
67. B)original
68. A)however
69. C)effort
70. C)opposed
71. D)once
72. D)techniques
73. C)inside
74. C)lessons
75. D)enhance
76. A)convince
77. A)trouble
78. C)diligent
79. C)process
80. B)concentrate
81. D)or
