Across
- 3. show there is a change
- 4. start discussing a sibject
- 5. triying different options
- 8. closely studied
- 9. check your idea
- 11. connect a piece of equipment
- 13. give facts and physical signs
- 17. subject area
- 18. closely watched
Down
- 1. very big change
- 2. far more advanced
- 6. romething really difficult
- 7. connect twio pieces of electrical equipment
- 10. understand and remember something
- 12. remove or make a feeling
- 14. additional results that you do not want
- 15. way of doing something
- 16. people to use their experiments