1 . 假如英语课上老师要求同桌之间交换修改作文，请你修改你同桌的以下作文。文中共有10处错误，每句中最多有两处。错误涉及单词的增加、删除或修改。
增加：在缺词处加一个漏词符号∧，并在此符号下面写出该加的词。
删除：把多余的词用斜线＼划掉。
修改：在错词下面划一横线，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处不计分

A big fire break out in a clothing factory in our city the last Wednesday. On 9：18 that morning, when the employees were working busy in the 4-storeyed building, heavy smoke was seeing coming out of the windows on the second floor. The fire lasted nearly a hour, and the majority of the 345 employees managed escape from the fire. Unfortunately ,seven were killed，and 23 were injured,lightly or serious. It’s reported that the only two exits of the building was not enough for such many people to escape in a hurry.