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一词；
2. 只允许修改10处，多者（从第11处起）不计分。
One day, I was cooking in the kitchen while the telephone rang. I went to answer it immediate. It was my good friend, Lisa. When we are talking on the phone, the fire alarm sounded. I ran back to a kitchen. The room was full of smoke but the beef was badly burnt. I was quickly turned off the gas, opened all the window, and then went out the house. To my surprise, two fire engines were outside my house. I was rather worrying. I told the firemen that it was her careless cooking that caused the heavy smoke.