Across
- 2. physics
- 6. first
- 8. ruler
- 9. fifth
- 10. third
- 12. science
- 16. to be allowed to, may
- 18. in
- 19. Man! Wow!
- 20. tired
- 21. biology
Down
- 1. fourth
- 3. religion
- 4. can, to be able to
- 5. laboratory
- 7. hard-working
- 9. lazy
- 11. hour / class period
- 13. simple / easy
- 14. chemistry
- 15. must, to have to
- 17. second