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。每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。

Dear Jack

   I know you will become a high school student this summer. You must be very thrilling as well as a little nervous. So I’m writing to share with you anything about life on the campus hope to be of some help.

   It has been three years since I enter high school. Frankly speaking I lead a busy but a colorful life. You may be wondering how to adapt high school life and here are my suggestion. First a reasonable schedule is a must which helps you strike a balance between work and relaxation. Additionally it’s also important to find the learning method what suits you well. What’s more taking part in some after-school activities may bring you a lot unexpected.

   The days in high school are precious. If you can make full use of it you will have an unforgettable experience.