短文改错（共10小题；每小题1分，满分10分）
此题要求改正所给短文中的错误.对标题号的每一行做出判断：如无错误，在该行右边的横线上划（√）；如有错误（每行只有一个错误），则按下列情况改正：
此行多一个词：把多余的词用斜线划掉，在该行右边横线上写出该词，并也用斜线划掉。
此行缺一个词：在缺词处加一个漏字符号（^），在该行右边横线上写出该加的词。
此行错一个词：在错的词下划一横线，在该行右边横线上写出改正后的词。
注意：原行没有错的不要改。
That Saturday when I entered into an underpass, I 86．
heard a beautiful sound. It makes me very happy. 87．
It was darkness there, but I could judge where the sound 88．
came. I walked towards a corner. An old man was sitting 89．
there, wears shabby clothes. He was playing erhu, “Oh, it is 90．
a beggar,” I thought. On that moment a man came by and dropped 91．
one Yuan in the beggar box. The old man stopped 92．
to say “Thank you”. He then groped (摸) on the ground. 93．
While he found the box, he picked up the money. He felt 94．
it and smiled. What beautiful the music was! It was 95．
played by a blind person. I just admired him.