The book is _____________ the pen.
in front of
The pencil is _____________ the chair.
under
The pencil is _____________ the floor.
on
The notebook is _____________ the chair.
on
The board is _____________ the door and the window.
between
The bookl is _____________ the desk.
on
The ruler is _____________ the notebook.
in
The pen is _____________ the book.
behind