• D There's no-one in the ro om / in the building / in the garden.
  
• D What have you got in your hand / in your mouth?
• D When we were in Italy, we spent a few days in Venice.
• D l have a friend who lives in a small village in the mountain
• D There were some people swimming in the pool / in the sea / in the river.
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• D Do you know that man standing at the door / at the window?
• D Turn left at the traffic lights / at the church / at the roundabout.
• D We have to get off the bus at the next stop.
• D When you leave the hotel, please leave your key at reception. (= at the reception desk

• D I sat on the floor / on the ground / on the grass / on the beach / on achair.
• D There's a dirty mark on the wall / on the ceiling / on your nose / on your shirt.
  
• D Have you seen the notice on the notice board / on the door?
• D You'll find details of TV programmes on page seven (of the newspaper).
  
• D The hotel is on a small island in the middle of the lake.

Compare in and at:

• D There were a lot of people in the shop. It was very crowded.

Go along this road, then turn left at the shop.

• D I´ll meet you in the hotel lobby.

I´ll meet you at the entrance to the hotel.

Compare in and on:

• D There is some water in the bottle.

There is a label on the bottle.

Compare at and on:

• D There is somebody at the door. Shall l go and see who it is?

There is a notice on the door. It says 'Do not disturb'.