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。
Have
you ever had headache during a test? Have you ever been too concerned about
something that you even can't sleep at night? If so, then you know that stress
is. Too much stress can result in angry, depression and other related problems,
which we need to take them seriously.
However, not all stress was harmful to you.
Some kinds of stress can help you getting things done better, like when you are running towards the
finishing line or when you are asking to deliver a speech to your class. Stress
sometimes can push you to make full preparations for a test.
The best approach of reducing stress is to
have a balanced life. If you get enough sleep, eat proper, take more exercise
and have enough fun time, you might feel less stressed.
