Prepositions: In, at, on (place)
In We use in to refer to a position in relation to a three dimensional space or when something is surrounded on all sides eg. A country, a town, a room, a field, a forest or any place with boundaries. I left my book in the bedroom. They met each other in Italy. In: the garden, France, my pocket, a car, a building.	At We use at to refer to a position as a point. He is standing at the bus stop. There is someone at the door. At: The bus stop, the crossroads, the end of the road.	On We use on to refer to a position in relation to a surface or a line. I left my book on the table. (surface) The school is on a very busy road. (line) We also say on a list, on an agenda, on a page and on a train/ bus/ plane. On: the wall, the door, the floor, the ceiling.