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限一词；

2.只允许修改10处，多者（从第11处起）不计分。

Last Sunday, I joined the voluntary group to help keep the traffic in good order at a big crossing near our school. At 8:00 a.m., we arrived there, wore red vests with the word VOLUNTEER on the back. We helped with the police remind the passers-by to obey traffic rule. To our delighted, they all waited for the green light patient except one motor-biker. We also give out some hand-made brochures about traffic regulations, for that many people praised us. About 4 hours later, they said good-bye to the police and left. Tired as we were, we all felt an honor to do our parts.