3 Listen and circle the correct answer. 1) Trains are... a) expensive. b) not expensive. 2) While travelling you can see... a) the train. 3) To travel by train you have to arrive at the... a) bus station. b) railway station. 4) You mustn't ... your train. a) be late for b) your friends. b) catch c) not comfortable. c) the country. c) airport. c) be early for