Here is the key ---- the room.

Here is the key -to--- the room.
The boy is ill -in--- bed.
You can spell it --in- English.
My book is -at--- home.
They put up a picture -on-- the front wall.
Our school is --between--the post office and the police station.
There are some birds -on-- the tree.
There is a window -in--the wall.
The girl-in-- a blue dress is my sister.

for
in
in
at
in
between
on
on
in