假定英语课上老师要求同桌之间交换修改作文，请您修改你同桌写的以下作文。文中共有10处语文错误，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（∧），并在其下面写上该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下划一横线，并在该词下面写上修改后的词。
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除起）不计分。
One day, there was a blind man sat on the steps of a building with a sign by his feet that read: "I am blind, please help." The kind and creative artist was walking by the blind man and stopped to observing that the man only had a few coins in his hat. He put a few of his own coins in the hat, and with stopping to ask for permission, took the sign, turned it around, and wrote a new message. He had then placed the sign by the feet of the blind man, and left. Late that afternoon the artist returned by the blind man and noticed that his hat was almost complete full of bills and coins. The blind man recognized his footstep and asked if it was her who had changed his sign. He also wanted to know why the man wrote on it. The blind man didn't know that his new sign read as this: "It's spring now, but I can't see it.