B Read the sentences and complete them with the prepositions in, on or at.
- My brother is working part-time at the hospital.
- There is a TV set in the corner of the room.
- James sits at the front of the class.
- They went on a boat ride on the river.
- Homeless people sleep in the streets of most major cities.
- He had to stay at hospital for a week after his operation.
- My girlfriend is waiting for me at the corner.
- The robbers parked their car in front of the bank.
Ответ: See above