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。

    As we all know, everyone has a dream. I dreamed of being a doctor ever since I entered primary school. Nowadays with modem life going rapidly, much people suffer from different kind of diseases, both mentally and physically. As a result, doctors are in a great need at home and abroad. My dream is to become a successful doctor who help to save people's lives. Although to be a good doctor was very difficult, I will do whatever I can to keep everyone health. To make my dream come true, I have told me over and over again that I'll devote myself on studies. After all, only by working hardly can one succeed.