Fill in the correct prepositions: on, in, at.

You can see a small shop ... the corner.
It's a small village. You probably won't find it ... your map.
Paris lies ... the River Seine.
My office is ... the first floor. It's ... the left after you come out of the elevator.
Henry will be retiring from his job ... two years time.
The price of food has gone up ... October.
If the sky is clear you can see the stars ... night.
Many European cathedrals were built ... the Middle Ages.
The first man walked ... the moon in 1969.
I always look up ... the stars ... the sky.