题目内容：

假定英语课上老师要求同桌之间互相修改作文，请你修改你同桌写的以下作文。文中共 有十处语言错误，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：在错的词下面画一横线，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］词；

2.只允许修改10处，多者(从第11处起)不计分。

It is known that as the development of economy, a number of cars is increasingly growing in our daily life. Cars indeed had greatly improved our life and brought much convenience. Therefore, they also bring problems, among which the traffic accident is on the top of the list. What can we do to solve the problem effective? The best solution for their society is to obey the traffic regulations. For example, when we cross the street, we should go until the light turns green. Also, we should ride bikes on the bike lane. Besides, we should warn people not to looking at their mobile phone while they are riding or driving. Lots of traffic accidents can be avoided what if everyone obeys the traffic regulations.