根据句意及首字母或汉语提示，写出各句中所缺单词的正确形式。（每空一词，共10分）
76．Tom hurt Mary so deeply that she would never f        him.
77．She has been taking exercise to lose w          and stay slim.
78．Everyone knows smoking is h          to their health and they try to give it up.
79．A v        earthquake hit Yushu and caused more than 1,000 deaths.
80．Whoever isn’t c     with what he has always feels disappointed.
81．Mary spent her            （童年）in the countryside.
82．If the goes on working hard, he is       （可能） to succeed.
83．It is large organization with offices      （遍及）the world.
84．Sicuak         （风俗）differ greatly from country to country.
85．Most information comes from the direct     （观察）of the stars in outer space.