根据短文内容选词填空。

　　Mark Twain was a very famous American writer．He was good at telling 　　1　　 stories to make other people happy．But 　　2　　 somebody played a joke on him．

　　One day, Mark Twain was invited to give a lecture(演讲)in a small town．After the lecture, he met a young man at lunch．He knew that the young man had an uncle who never smiled 　　3　　 laughed．The young man told Mark Twain that 　　4　　 and nothing could make his uncle laugh．

　　“　　5　　 your uncle to my lecture this evening,”said Mark Twain,“I'll tell some interesting stories and I'm 　　6　　 I can make him laugh．”

　　That evening the young man came to Mark Twain's lecture with his uncle．They sat in the first row of the hall．Mark Twain looked at the old man and told some funny(有趣的)stories, which made people in the hall laugh．But there was still no 　　7　　 on the old man's face．Mark Twain told the funniest stories he knew．But the old man still didn't laugh．At last, Mark Twain 　　8　　．He felt very discouraged(失望的)．He was very surprised at the old man．

　　Some days 　　9　　, Mark Twain met a friend and told him about his bad experience in the small town．

　　“Oh,”said his friend,“I know what 　　10　　 to that old man．He has been deaf(聋的)for years．”

1．________　　2．________　　3．________　　4．________　　5．________

6．________　　7．________　　8．________　　9．________　　10．________