题目内容：

假定英语课上老师要求同桌之间交换修改作文，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: 在缺词处加一个漏字符号(∧)，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。

There are too many cars in our town now. For a result, there are lots of traffic jams, and the air which we will breathe is terrible. Our town is very old but all the streets are quite narrow, so there is no room for bus lanes, which mean that buses always get stuck in the traffic jams, too. However, lots of accidents with cyclists often happen because of crowded street. But I think there is a simple solution of these problems. The government should close city center to all traffic except buses and bikes, and build very larger car parks outside the town. Car drivers can take a bus into the city center and arrive at work or the shops relaxing and in a good mood.