In / at / on

They study TELECOMS_________ university

• in

• at

• on

There is a computer _________ the middle of the room

• in

• at

• on

There was a lot of people ______ the concert.

The engineer is _______ his car

• in

• at

• on

My sister is not in her house. She is ________ at her husband´s

• in

• at

• on

I am _______ hospital. I am trying to conect set up a web.

I am _______ bed and I don´t want to wake up.

• in

• at

• on

Yesterday I saw many people dancing _______ a ship.

• in

• at

• on

The stars are _______ the sky.

My car is parked _________ on the supermarket.

• is

• on

• at