1) There are a lot of private vehicles in our country. They are filling the cities and polluting the air , so people are getting sick more often.
I think the number of accidents is increasing, because there are a lot of cars in the city
2) In conclusion it can be said that we have to reduce the number of cars.
It is necessary increase quantity of people who will get to work by public transport. We have to make our cars more economical, so that they did not put dangerous substances into the air.