77. There is no easy _______________ (治愈) for loneliness.

第一节 单词拼写

根据所给句子及横线后的汉语意思写出正确形式的单词。(共5小题；每小题1分，满分5分)

76. Every day the chimneys of factories pour a great deal of smoke, _______________ (污染) the environment little by little.

35. If the students who killed themselves had only been more confident, their deaths ________.

A. need have been avoided　　　　　　　　　　　　　　 B. must have been avoided

C. might have been avoided　　　　　　　　　　　　　　　　　 D. will have been avoided