Mark: Hello there! As you both know, I live in London, a very big city... My father is a shop owner and he always goes to work on foot. His bookstore is in our neighbourhood. Lucky fellow......

Kostas: I live in Athens and our flat is in Nea Ionia, a suburb of Athens. My mum, who is a bank clerk in the city centre, usually drives to work and it takes her over an hour to get there. She doesn't use public transport. I don't think it's a good idea she drives to work. And she has huge problems in finding a parking place every day!

Nadine: Well, my family and I live in the centre of Marseilles, which is a big city in the south of France. My parents work in a factory outside the city and they go to work by bus. Many of their colleagues drive to work but it seems to me my parents are doing the right thing. It's better to take the bus - the traffic is so heavy!