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。

Sandy arrived at the museum at last. She was so tired that she has to find a chair to sit on. If she sat down, she noticed nice painting on the wall. She stared with it for a long time--- such long, that she fell asleep.

Suddenly, she felt a tap on his shoulder. She looked up and saw a man on a horse wear a metal suit. He was only a sculpture a moment ago, but by now he was alive and talking to Sandy! She was so frightening that she ran down the hall.

From around the corner she could hear someone singing. She went to see what it was but there was nobody in sight.