По insert the prepositions in , on or at: 1.i read about the pop festival magazine 2.my parents flat is the twenty-fist floor 3 melanie was holding a small bird her hands 4 l'll meet you the airport 5natasha now lives the avenue 6 l was standing counter in the baker's shop , waiting to be served 7london the thames 8 there weren't many books shelves 9the passengers had to stand a queue 10 the women sitting next to me left the train
2. on
3. in
4. at
5. at
6. at
7. on
8. on
9. in
10. in