Match the words / phrases with their explanations.

1. downtown

a. an underground train system

2. concrete jungle

b. a city or part of a city with many buildings next to each other

3. sky train

c. the centre of a city, especially its main business area

4. metro

d. things in a neighbourhood that make life more comfortable such as parks and shopping centres

5. public amenities

e. a type of train that runs on a railway high above the ground