15.A A. post office 16. .A A. baker's 17. The A. baker's 18..The A. chemist's 19.The 20. A is a place where you can send letters. B. baker's C. chemist's A. square is a place where you buy books. B. bookshop A. petrol station C. florist's is a place where you can buy bread and cakes. B. florist's C. greengrocer's is a place where you can go if you want to have your hair cut. C. hairdresser's B. greengrocer's is a place where you can buy fruits and vegetables B. florist's C. greengrocer's is a place where you can catch a train. B. train station C. greengrocer' ter is already there.