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 used to feel sleepy in class and I couldn't focus to my lessons. As a result, not only did I do badly in our studies, but also my health went from bad to worse, for that I was often scolded by my parents. I decide to change my situation. Half a year ago, followed my teacher's advice, I began to join some sports activities. I now play the basketball for 45 minutes every day. My health has improved, but at the same time, I've made lots of progresses in my studies. Physical exercise has changed me into an entire new person.