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。 请按下列情况改正：

多一个词：把多余的词用斜线（\）划掉，

缺一个词：在缺词处加一个漏字符号（∧），在该行下边写出该加的词。

错一个词：在错的词下划一横线，在该行下边写出改正后的词。

注意：改上边的不给分

This afternoon , on my way back to home ,   I  saw  a group of

young people playing chess below a tall tree. A blind man

happened to past by.His stick which helped him walk touching

one of the young people.The young man got angrily and was rude

to the blind man. At that time, I go over in a hurry and made

an apology to the young man and help the blind man to walk

across the street. I praised by some people nearby. They said

he was a good student who was ready to help the others.

《煤矿安全规程》规定，采煤工作面严禁使用什么样的坑木和支柱？