假定英语课上老师要求同桌中间交换修改作文，请你修改你同桌写的以下作文。文中共有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：把缺词处叫个漏字符号（∧），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。
A few days ago I saw an instructive program on TV. It was about what the traffic problem in cities. It seems that a great deal of damages is done by traffic．All our cities are suffering from this. Some buildings are actual falling to pieces . It's often fast to walk than to go by car and by bus. The problem has been getting worse day by day．This is only one of the thousands problems in our cities. All sorts of terrible things were happening to our cities. The question is how we can do about it．0ur roads were never designing for such heavy traffic．It is time the government does something about
these problems．