Tolong bantu jawab ya

1. at ..at
2. in .. at
3. in .. at
4. at
5. in
6. in
7. in
8. at
9. in
10. at .. on
11. on
12. on
13. at
14. at
15. at
16. in
17. at
18. in
19. at
20. on

semoga membantu..

1. at, at
2. in, in
3. at, in
4. at
5. in
6. at
7. at
8. at
9. in
10. at, on
11. on
12. at
13. in
14. at
15. at
16. at
17. at
18. on
19. on
12. on