第二部分（共35分）
V．短文改错（共10小题，每小题1分，满分10分）
假定英语课上老师要求同学之间交换批改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。
注意：1. 每处错误及其修改均仅限一词。
2. 只允许修改10处,多者(从第11处起)不计分.
I used to going into the countryside to draw animals and plants, on one day 1 was walking across a field, looking for rabbits to draw. Lost in thought, I hadn't noticed a  bull (公牛) to running towards me. About 100 metres ahead of was a tree under which I would sit and draw. Suddenly, I heard the noise behind me. I turned and saw the bull. I knew a bull can run more faster than a man, and I also knew that a bull can't see very clearly and notice only shape and movement. So I ran calmly towards the tree, keep the tree, myself and the bull in a straight line. I also threw my bag to the right, so it was out the line of the tree. The bull saw a sudden movement and headed to the bag. I reached the tree and climbed up it.