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X. Read the passage and decide if each statement is T (true) or F (false).
Being one of the most populous countries in Europe and with about 20 million tourists every year, London is busy all the time. There are various modes of transport for one to choose between public and private transport. However, the most popular means of transport is the London Underground.

The Underground is a great way to travel for both tourists and locals. It is the oldest underground metro network in the world and a few parts of this system have been operating since 1863. The London Underground carries more than a billion passengers every year and it spreads across 270 stations. It usually operates from 5:00 in the morning till midnight but some lines offer 24-hour service. It is the most efficient way to get around London. If you are a tourist, it is better to avoid the rush hours on weekdays as it gets very busy and crowded with London commuters. These rush hours are generally between 7:30 a.m. to 9:30 a.m. in the morning, and from 5:00 p.m. to 7:00 p.m. in the evening. Also, The Underground is the cheapest travel option from Heathrow Airport to Central London.

Statements
1. London has a big population of 20 million people.
2. London Underground mainly serves tourists.
3. There are 270 underground stations in London.
4. All the underground lines operate until midnight.
5. No other option is cheaper than The Underground when you travel between the city and the airport.
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