【题目】（河南省重点中学协作体2016届高三第二次适应性考试）短文改错。
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(Λ)，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。
In our life, we often regret what we did and which we couldn’t do. Actually, it doesn’t benefit us at all. As for most of us, we missed many chance to earn more money, to get a high position and to realize our dreams. We often regret that we don’t seize those opportunities, thus feel upset. Although we do know regretting the Past is no benefit, but we still can’t help doing it
To avoid the problem below, we need to pay more attention to what you are doing now, making us busier and having no time to recall the past. Moreover, we’d better set reasonably goals one by one. Only by doing so can we struggle for our future better.