此题要求改正所给短文中的错误，对标有题号的每一行作出判断；如无错误，在该行右边横线上画一个勾（√）；如有错误（每行只有一个错误），则按下列情况改正：
此行多一词：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上该加的词。
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：原行没有错的请不要改。
The long-desired winter vacation arrived in the end. As soon as the
bell rang, announced the end of the class, each student couldn’t wait to
rush out of the classroom. Half an hour later, my good friends Li Ming
and I were on the way back home. Such crowded was the train we
took that we had to stand．Thinking the coming Spring Festival
and the two weeks’ stay with parents, we both felt happily and gay. All
of a sudden, I saw a man picking an old lady’s pocket of his purse．
With the help of Li Ming, I caught the pickpocket and force him to give
back the purse to a lady. The thief was taken away by the guard．
Praised by other passengers, so we felt proud of what we had done．