1 . 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。

It generally believed that regular exercise keeps the body firm and strong. So I usually go jog as a form of exercise. A hour’s physical exercise every day makes me to feel healthier and more energetic. Besides, I don’t smoke or drink wine, so do I stay up late. Instead, I keep a balance diet and go to bed early. More importantly, I always keep an optimistic attitude from life, holding the belief what a bright future and a peaceful world are ahead of us human beings. To sum up, both of these practices guarantee a healthy body and a life full of happy.