请修改以下短文，短文共10处错误，每句最多有两处错误。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：在错的词下画一横线，并在该词下面写出修改后的词。
注意：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. She was my close friend, Lisa. When we were talking on a phone, the fire alarm sounded. I run back to the kitchen find the room full of smoke and the beef badly burnt. I quickly turned off the gas, opening all the windows, and then went out of the house. To my surprise, two fire engine were outside my house. I was rather worried. I told about the firemen that it was my careless cooking which caused the heavy smoke.while-when
网友回答
(答案→)while-when
解析：
【小题1】考查be doing …when…“正在干某事这时…”所以把while改成when。
【小题2】考查副词，副词修饰动词went to answer，所以用immediately。
【小题3】考查代词，电话中提到的人用代词it，不用she或he。
【小题4】考查冠词，“在电话中”用“on the phone”。
【小题5】考查时态，整篇文章用的是一般过去时态，所以把run改成ran。
【小题6】考查非谓语动词，表示“结果发现”用“to find”。
【小题7】考查时态，turn off，open和go out of是三个连续的动作，所以都用过去时态，把opening改成opened。
【小题8】考查名词复数，前面有two，engine是可数名词，所以用engines。门外停着两辆消防车。
【小题9】考查介词，tell sb sth“告诉某人某事”，tell后面不加介词。
【小题10】考查强调结构“it is …that…”，所以把which改成that。正是我做饭粗心导致的浓烟。