短文改错。
下面短文中共有10处错误，每句中最多有两处。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(∧)，并在此符号下面写出该加的词。
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。
As a middle school student of Senior Three, I do sports one and two hours a day, such as doing morning
exercises, playing basketball, long-distance running and so on. I think it is very helpfully to me. Take exercise
makes me even more healthier so that I won't be ill very often. What's more, I also get myself relaxing in
different kinds of sports. Only in this way I do a better job in my study in high spirits. For doing physical
exercise, I'm becoming stronger and more confident than ago. I did think it is necessary for everyone to spend
some time on sports every day so people's health is important in modern life.
_________________________________________________________________________________________
