题目内容：

短文改错

此题要求改正所给短文中的错误。如有错误(每行只有一个错误)，则按下列情况改正：

该行多一个词：把多余的词用斜线(＼)划掉，在该行右边横线上写出该词，也用斜线划掉。

该行缺一个词：在缺词处加一个漏字符号(∧)，在该行右边横线上写出该加的词。

该行错一个词：在错的词下划一横线，在该行右边横线上写出改正后的词。

John is a tall man weighing as much as 100 kilogram. Though he is large, but he fears dogs. One day he was taking walk when a dog suddenly appeared from nowhere. He became so nervous that he ran as fast as he can. The dog kept run after him and it was getting closer. In the dangerous situation, John decides to climb up a tree to avoid the dog. Unfortunately, it was not a easy job. He hadn’t gone up very high when the dog stood right above the tree. The dog jumped up and bit it’s teeth into his bottom. John fell right onto the dog’s head, that killed it immediately.