1)i think her flat is the 3rd floor of that building. a. at b. in c. on 2)it was a very slow train. it stopped every station. a. in b. on c. at 3)there was nobody this island. a. on b. at c. in 4)the bus was full. there were too many people . a. in b. on c. at 5)london is __the river thames. i like swimming in the river. a. at b. in c. on 6)is tom photo? i can`t find him. a. on b. at c. in 7)it was a lovely day. there wasn`t a cloud sky. a. in b. at c. on 8)the garden is the back of the house. a. in b. on c. at