My room - Prepositions of place

Peter's got posters ___ the walls.

Have you got a second bathroom? - Yes, it's ___ the ground floor.

Where is your wardrobe? it's ___ the window.

My bedroom is ___ the bathroom.

She's got trainers ___ her bed.

I've got books ___ my bookcase.

We've got central heating ___ all the rooms.

Dan keeps his computer ___ his desk.

Sam's cat sleeps ___ his desk.

There are three bedrooms ___ the third floor.