46. Although living in the city has many advantages, there are some disadvantages too.
 
47. The cost of living is very high in the city because most goods are very expensive.
 
48. The environment is polluted with dust, smoke, garbage and dioxide gases from factories, and the streets are dusty and unclean.
 
49. As there are a lot of vehicles and people in the road, the city is always busy and noisy.
 
50. Therefore, it is hard to lead a healthy life in the city.