请修改下面的短文。短文*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...

问题详情：

   请修改下面的短文。短文*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：在缺词处加一个漏词符号（/）,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。

One day, I was walking home after school while an old man fell heavily onto the snow-covered road. There were several people pass by at that time, and no one took any action. Some of them said that it was none of their business; others people worried that if they helped him, they might get into a difficult situation. Seeing what had happened, I called 120 immediately. While waiting the ambulance, I took down my coat to keep the old man warm. In no time did the ambulance came. Having helped the doctors carry him into an ambulance, I felt relieved. In my opinion, this is our duty to help those who are in troubles. Only in this way can we live in a great society.

【回答】

第一行：while改为when      第二行：pass改为passing      and改为but

第四行：people删去/others改为other      第五行：waiting后加for  

第六行：down改为off           第七行：came改为come    an 改为the          

第八行：this改为it     troubles 改为trouble

知识点：其他

题型：短文改错