Ответ:
A. 1.pair; 2. floors 3. buy 4. rings 5. chemist's 6. newspapers 7.supermarket 8. sale
B. 9. cinema 10. concert hall 11. art gallery 12. adventure park
C. 13. a 14. the 15. a 16. the 17. an
D. 18. had 19. Did you eat 20. read 21. came 22. He didn't fed 23. forgot