短文改错。
根据学生作业改编
文中共有10处语言错误，错误涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏词符号（/\）,并在该句下面写出该加的词。
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。
Dear editor,
I am a high school student. A few days before, one of my good friend told me that he was going to
stop school. He said that he wanted to start his own’s business. I tried my best to get him to change his
mind, and failed. I realize it is difficult of me to change his mind. He is not doing so good in his studies.
The process is more important than the result is. Now there are only 90days being left before the test. I
am not sure his decision is right or wrong. I needed your advice.
Gao Fei
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