Welcome. Come ... the house.
inside
There are a lot of books ... the shelf.
on
An alien is hiding ... the rock.
behind
The girl is reading ... the tree.
under
The kitten is sitting ... the box
in
A woman is standing ... the sea.
in front of
There's an armchair ... the window.
next to
There's lovely garden ... of the house.
outside
There are nice flowers ...
on the left
There's a bookshelf ... two beds.
between