The book is sitting _____ the shelf.
on
Is there anything that you want to say to me? _____ the moment, no.
At
Look! There is a butterfly _____ the wall!
on
I got bitten by a mosquito _____ my arm.
on
First we had to get _____ the car and then _____ a bus. After that we got _____ a train and FINALLY, we arrived _____ the party.
in / on / on / at
There is a caterpillar _____ the ceiling.
on
What are you doing ___ Christmas?
at
___ the evenings, I like to watch a series.
In
I'll meet you ____ the airport.
at
She's waiting for us ____ the train station.
at
What are you going to do ____ 14th February?
on
Some people prefer to work ____ night.
at
Do you enjoy going out ___ the winter?
in
