Across
- 1. Cannot be seen
- 4. The feeling when having fun
- 6. To know something
- 9. To belong to a country
- 10. Strange or different
- 11. Pretending to be someone else
- 14. A machine that runs a program
- 15. Musical repetition
- 17. Human need this gas
Down
- 1. creative ideas
- 2. The steps to explain
- 3. The energy of heat
- 5. the number one choice
- 7. An instruction showing a copy
- 8. repeated addition
- 12. The act of testing an idea
- 13. The best Nation on earth
- 16. Talking about a topic