短文改错（共10小题；每小题1分，满分10分）
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短信。信中共有10处错误，每句中最多有两处。错误涉及一个单词的增加、删除或修改。请按照下列格式修改：
增加：在缺词处加一个漏词符号（∧），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：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。
Last Sunday I saw a worst storm in years. It came sudden and went on for over three hours. After lunch, I went into my room to have a rest. The air was hot, but all was quiet. Then a strong wind started to blow into my room. Pieces of paper on my desk flew high into the air and some flew out the open window. As I ran out to catch it, big drop of rain began to fall. When I come back into my house, it was raining more harder and harder. Then I heard a loud sound from the back of the house. When I ran out of my room to find out that had happened, a big tree had fallen down and broke the top of the backroom.