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Ответ:

1. bicycle doesn't cost money.

2. prople teravel in order to get bright emotions and new experience.

3. because they suffer from travel sickness.

4. a train is ideal for travelling long distances within the same country, or between countries which are connected by land.

5. because If the journey is a long distance,

they may sleep on the ferry while waiting to

arrive at their destination.

6. people travel on foot when they need to travel short distance.