Now more and more families have their own cars.The car is one of the most helpful inventions.Cars have many advantages,but cars also have many disadvantages .On the one hand,you can go almost anywhere conveniently by car.When you take a car to work,you can save a lot of time .If you are late for work,you can go to work by car.Maybe you can arrive there on time.On the other hand,cars are very expensive.The poor can not buy it.In some places,you do not have places for parking.In the city,your car will be slow during rush hours.So it is not convenient to use cars.Sometimes,your car will waste your time not save your time.Using too many cars can cause air pollution.So we should not often use our cars.It is very important for us to protect our environment.In order to protect bnvironment,we should not often use cars.
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