The car is...
inside the bed.
under the bed.
inside the window.
under the book.
The book is...
in front of the bed.
next to the bed.
in front of the chair.
next to the window.
The T-shirt is...
in the bed.
under the bed.
on the bed.
The box is...
behind the rucksack.
under the bed.
on the bed.
behind the desk.
The rucksack is...
behind the desk.
between the bed and the chair.
between the ball and the car.
behind the bed.