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。

Each of us have some bad habits. Once you get into a bad habit, you’ll find it hard to get rid of them. Anyone who has tried to give up smoking knows this very well. Of course, if you develop a better habit, you will benefit a lot on it. Now my 80-years-old grandpa is in the habit of taking walk after dinner. That’s why he is not in good health most of the time, though he caught a cold now and then. I have developed a good habit of keep a diary, so I’m good at writing. Habits, good or bad, make you which you are. The key to success is to form a good habit.