题目内容：

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。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。

We all knew we can’t live on our own. A lot of things are very important in our lives, such as animals which are usual considered as one of the most essential part. They help us in many ways except providing their meat for us and making our diet variously. Moreover, people get much fun and pleasure when lived with them. In my opinion, how the animals give us may be more than the things we do for them, but they are our great and honest friends. So in the return, we should do our best protect them because we can not live without them.