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一词；

2. 只允许修改10处，多者(从第11处起)不计分。

Recently campus safety has become public concern since a series of violent attacks happen, which caused serious damage. It makes us aware of the fact that safety should always come firstly in our daily life.

In this case, we should take effective measure which can solve this problem. Firstly, our students should realize we must follow our school or traffic rules, and pay attention to food safety. Many incidents happen just because of we are too careless. Secondly, you should take training of security so that we can keep calm if faced with conflicts. Thirdly, our government and schools should provide surroundings in that our students can focus on acquiring knowledge.

As far as I am concerned, improve campus safety is very important that we all should try our best to make everyone on campus safe and sound.