题目内容：

假如英语课上老师要求同学们交换修改作文，请你修改你同桌写的一篇作文。文中共有10处语言错误， 要求你在错误的地方增加、删除或修改某个单词。

增加：在缺词处加一个漏字符号（∧），在其下面写上该加的词。

删除：把多余的词用斜线（\）划掉。

修改：在错的词下划一横线，并在该词下面写上修改后的词。

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11处起）不记分。

Patience is of great importance in our daily life. Once I waited a bus to come at a stop. 30 minutes past, but no bus came. Both sad and annoyed, I decided to walk on feet. But no sooner had I left when the bus arrived. I thought if I had waited for one more minute, I would have caught it. If I chose to take a next bus, I would have to wait for other 30 minutes. Only then do I realize my problem. Being impatient will possible waste all the effort that we have put it in. Now whenever I am close to lose my patience, I’ll think of this experience.