Use the right preposition: in, on, by.

Решение:

1. The detective followed him in his car.
2. They prefer travelling by car, it's more comfortable than going by a bus.
3. Aunt Nancy wrote to us that she was coming by train.
4. There were no tickets and they decided to travel by plane.
5. When we were on a ferry, a terrible storm broke out and the voyage was frightening.
6. We paid extra money because we were late and came by taxi.
7. James goes everywhere by his car.
8. All the kids came to school by bus.
9. I was so tired that I slept on the plane.
10. Of course you can go on foot, but it's quicker to get there by tram.

Ответ: in, by, by, by, on, by, by, by, on, on/by.