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。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。

    Taking parts in recreation activities help us keep fit. There are different kinds of activity in our daily life, for example, listening to music, watching TV, playing chess, or going to cinema. But I think we'd better to have more outdoor activities. As students, we usually sit too longer in the classroom, and as a result our eyes and brains getting tired. But it is a good idea to play ball games, go swimming, do some runnings, or even go for a picnic. Our brains also need changes to make itself smart and active. In a word, exercise is good for health.