In my city, we have many problems about traffic jams and traffic accidents. Because our city have many people lived here. About traffic accidents, there are many too. People usually drinking beer and driving to home with high speed that cause the accident easily, or thieves get people's stuffs and run with high speed can make a accident too. Ho Chi Minh city always noisy, but at night it very quiet. However, many people singing or turn the music loudly at night, it always make me angry and can't sleep! About the air pollution, it's serious but may better than Ha Noi. Our city have less smoke and vehicle than Hanoi. It usually raining here so the air pollution didn't serious as you thought.

3.Air pollution is very concerning in my city.  exhaust fumes from vehicles and garbage from household that are discharged are reason for air pollution.my city has more than a million automobiles and thousands of industries which are emitting into air. Air pollution is the direct reason people suffer from various dangerous diseases such as lưng cancer, heart disease.... 

- It is extremely serious because you know 40% of death are caused by air pollution, it is one of the factors that leads to cancer diseases