1. When they went to the USA. They went _____ plane.
2. I am afraid of travelling __________ ferry.
3. Have you ever been ______________ a ship?
4. It is expensive to go ________________ a taxi.
5. I usually go ________________ school bus.
6. He has a yacht. He often travels ________________ yacht.
7. They first met ________________ a train.
8. In ancient times people travelled ________________ horses.
9. Going ________________ foot is good for your health.
10. To avoid pollution we should go ________________ bicycles more.
