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 used to feel sleepy in class and couldn’t focus on the lessons the teachers
give. As a result, not only did I do bad in my studies, but also my health went from
bad to worse, about which I was often scolded by my parents. I was also annoying
about my situation. About half a year ago, followed the head teacher’s advice, I began to participate in some sport activities and kept on playing basketball for 45 minutes and so every day till today. Now my health has been greatly improved, so at the same time, I’ve made good progress in all my lessons. Physical exercise has changed me into an entire new person!