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。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。
Time waits for no man. This is something I learned very clear last term. I spent so much time fool around that my grades began to fall. I finally realize that something necessary had to done. It was time of a change.
Now I have a new plan for using my time wisely. I have set my alarm clock ahead half a hour. This will give him a head start on the day. I have also been decided to keep a record of what I do and when I do it. Looking back on which I've done will give me some idea on how to rearrange my time.
