82. I feel highly h__________ by the kind things you say about me.

81. A postman is a man who d__________ letters and parcels.

80. A ______________ (化学的)change takes place in paper when it burns.

79. The change was ______________ (渐渐的),but now it looks completely different.

78. My heart ____________ (悲痛)for the poor unhappy children.

77. The ____________ (平均)age of the boys in this class is sixteen.

　　 根据下列句子及所给的汉语意思，写出空缺处的单词的正确形式。

76. He gave me a lot of useful _________________ (信息).