№2. Вставьте нужный предлог: on, by, of.

Решение:

1. He is travelling on 6 o'clock train.
2. I like to go by car.
3. My mother is afraid of travelling by plane.
4. Let's go on foot.
5. Look out of the window.

Ответ: 1-on, 2-by, 3-by, 4-on, 5-of.