A: 2. on 3. on 4. on 5. in 6. at 7. in 8. on 9. in 10. on 11. on 12. at 13. in 14. in 15. at

B (тут точно всë правильно): 1. in 2. to 3. in 4. at 5. to 6. in 7. at 8. to 9. at 10. at

Ответ:

лист первый:

1. at

2. on

3. on

4. on

5. in

6. at

7. in

8. on

9. on

10. in

11. on

12. on

13. in

14. in

15. at

лист второй:

1. in

2. to

3. in

4. at

5. to

6. in

7. at

8. to

9. in

10. at