Match the words and phrases with their meanings. 1. city dweller (np) a. a garden built on the top of a building 2. infrastructure (n) b. a very tall, modern building, usually in a city 3. urban center (np) c. a person who lives in the city 4. roof garden (n) d. basic systems such as transport, banks, etc. needed for a city, country or organization to run smoothly 5. skyscraper (n) e. an area in a city where a large number of people live.