There's an armchair ... the window.
next to
A woman is standing ... the sea.
in front of
An alien is hiding ... the rock.
behind
There's a bridge ... the river.
over
The ball is ... the box.
above
The girl is reading ... the tree.
under
The people are sitting ... each other.
opposite
There's a bookshelf ... two beds.
between
There are a lot of books ... the shelf.
on
There's a tree ... the house.
near
The family is sitting ... the table.
at
The cake is ...
on the right
There are nice flowers ...
on the left
The kitten is sitting ... the box
in