76. _____________　 77. _____________　 78. _____________　 79. _____________　

85. After much c________, my brother decided to sell his car.

84. The river is n________, you can easily swim across.

83. There are a lot of h________ spots in China.

82.His hand shook slightly as he i________ the key into the lock..

81.War and disease are the two main causes of 　t_______ population.

80. His skin can’t be _________to (暴露于) the sun for such a long time.

79. Can you tell me what UK ________ for (代表，象征)?

78. After many years of hard work and study I finally received my ________(文凭 ).

77. The public remain　 _________(怀疑 ) of these claims.