Topic sentence: Living in a city has a number of drawbacks.

Problem 1: Traffic jams and traffic accidents

Problem 2: Air pollution

Problem 3: The noise/ Noise pollution

Conclusion: These are factors contribute to making city life more difficult for its residents.

Viết lại đoạn văn ngắn hơn:

Living in a city has a number of drawbacks. The first problem is traffic jams and traffic aidents. In addition, air pollution has negative effects on people's health and the environment. Last but not least, the city is noisy, even at night. In short, the factors above make city life more difficult for its residents.