1 . 假设英语课上老师要求同桌之间相互修改作文，清你修改以下作文。短文中共有10处错误，每句中最多有两处。错误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（∧），并在此符号下面写出该加的词。
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

I used to live in a small town with green trees all around it. The river, run through the town, had clean water in that fish could be seen swimming in groups. The houses, however, was small and simple, and the street wasn’t wide enough to run cars. People worked hard all the year round but still live a poor life.

Now great changes have been taken place there. You can see tall buildings, department store and factories everywhere. Cars and buses are running in broad streets. But as the development of industry, pollution is becoming more and more seriously. A lot of trees are gone, and fish have disappeared because the dirty water. To our joy, people have been doing your best to stop pollution and make the town even more beautiful.