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：在错的词下面画一横线，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。

                                                                                          How to keep mental health

    As we know, mental health links to our happiness index. However, it's vital to keep our mental health. Here are some advice on how to do it.

    Firstly, accept yourself true. Knowing your own potentials and making practical goal instead of setting high expectations can keep yourself away from heavy burden, thus enjoy good mental health. Secondly, be friendly and sociable. Life with friends is miserable. So make friends. It's their comfort and support which help you go through hardship in life. Lastly, commit yourself to your career. Your efforts bring you a sense of achievement, which will in turn ensure your happiness.

    In a brief, it pays to focus our attention on our mental health. The more, the best!