Unit 3. A traffic problem in a city

I am writing because I was thinking a city that had a traffic problem. I've decided that I'm going to do Barcelona, because it is a city that is not far away. The problem in Barcelnona is that, in the morning, there are a lot of cars in the street.

I think there is a reason for this. There are a lot of cars because all the people go to work in the morning at the same time. So for this reason there are problems of traffic each morning.

We mus do something about this situation. If people can go by bus, We won't have the traffic problems, and decrease would be pollution.