Actually, you learnt preposition of place in Primary school. It should be an easy subject for you. It's about: behind, in, next to, on, in front of, under and between.
The picture in your book is about 6 mechanics standing and sitting near and in the car. You just need to position them. Some of you did well. And I wrote the answer. And you couldn't see it from your seats, so you moved to the front of the whiteboard and sat on the floor.. Lol..
Please study harder about preposition of places. believe me, it's the easiest subject on Preposition.