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。

On a storm night, I was alone at home. After finishing my homework, I was about to go to bed. All of sudden, the light went out. Meanwhile, there was a flash of lightning following by thunderstorms. I was so scared that I ran to my bed but hid myself under the blanket. To make matters bad, my parents went to hospital to accompany with my sick grandfather. I felt too frightened because my mind was full of scary thought. After some time passed, I fall asleep at last. At breakfast I told my parents that I had seen last night. My parents were also frightened and they promised that they would ever leave me at home alone.