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。
This morning, our school holds a fire drill(演练). We were listening the teacher attentively in the math class after we heard the fire alarm from the speaker on the wall. The teacher stopped teach immediately and organized us to exit the classroom quickly. When we got into the passageway, we found us surrounded by smoke. It was chocking but our tears ran down. We students bent down, covered our mouth with handkerchiefs, and running downstairs rapidly into the open on the playground, just as we had been taught ago. Fire disasters are often seeing on TV and read about in the newspaper. We should know the skill to escape from the fire in case of emergency.