假定英语课上老师要求同桌之间交换修改作文，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。错误仅涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号(∧)，并在其下面写出该加的词。
删除：把多余的词用斜线(＼)划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
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 was not good in math in the first year of junior high schoo1．Having been failed so many times in math exams，I was anxious about the subject．Every time I tried hardly to work out a math problem，I was afraid of making mistakes，that really made me feel helpless．Luckily，I met a nice math teacher in second year. She told me that I didn’t need to worry about making mistakes because I could find out my shortcomings through my mistake．She always encouraged myself to try again whenever I make a mistake．Thanks to my teacher’s encouragement，I became interesting in math and made rapid progress．My experience proves that failure was the mother of success and that we can learn a lot from our mistakes．