Exercise: in, on.

1) I've got some lovely photos of our holiday my camera.

2) Just leave the keys my desk so I can see them when I come in.

3) John is . I saw the lights on in the living-room.

4) Ow! There's something my shoe.

5) She has lovely carpets the floor.

6) There were a lot of tourists the street.

7) We went for a walk the woods.

8) I lay the beach all day.

9) I'd like to take you a slow boat to China.

10) She had the words "I love London" the front of her T-shirt.