Lesson 31 - How long does it take? - Exercise 9

Watch the video, then answer the question.
There are 2 questions in this exercise. The first question is about prepositions, and the second question is about the title of this lesson.

On foot
Means of transportation: in general, use by: by car, by bike, by train, by plane, etc., but on foot.

If you need a translation to your own language, use the Google Translate button at the top-right of the screen.