Today, my friends and I decided to take a visit to an old town which was near our city. We had heard of it for a long time, but we never had the chance to go there.
University campus should be clean and quiet for students to learn knowledge. Students also need a safe environment. So it is not good to open the university for tourists.
In my hometown, the air is polluted seriously. However, in recent years, the pollution gets from bad to worse, because of the increasing number of private cars.