请你修改下面的文章。文中共有10处语法错误。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：在错的词下画一横线，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。
3．按照格式要求改错，否则将不得分。
    Hello, Peter. I’m very grateful for your concern about my coming exam. To tell you truth, I have been busy prepare for the exam recently. Some classmates are feeling real stressed due to the exam, but I don’t take them so serious. I always learn in a relaxed mood and I’m making a great progress. Now that I had tried my best, it doesn’t matter much to me what the result is.
   In my opinion, we should keep a good balance among our study, rest or exercise. I believe we can be succeeded if we prepare for the exam in a proper way.
I’d appreciate it if you could give me some good advices.

【考点】不可数名词，人称代词，并列连词，形容词辨析，程度副词，定冠词，不定冠词，现在完成时，现在分词

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