в каких пословицах и поговорках встречаются названия химических элементов. 
Если можно несколько.Кроме "Не все золото,что блестит" и"Тупой,как кремень"

Раскройте скобки, употребляя гла­голы в Present Perfect или Past Simple.

1. Не (to be) abroad five years ago. 2. You (to be) in theCaucasuslast year? 3. They (to leave)Englandwhen he (to be) still a child. 4. He (not yet to come) back. 5. He (to go) already? 6. When you (to see) him last? 7. I (not to see) him for ages. 8. His health (to improve) greatly since I (to see) him last. 9. Last night I (to feel) tired and (to go) to bed very early. 10. Where you (to spend) your holidays? 11. You ever (to spend) your holidays in theCrimea? 12. While travelling in theCrimeaI (to meet) your friend. 13. I never (to visit) that place. 14. He (to visit) that place last year. 15. I just (to get) a letter from Tom. 16. You (to take) any photographs while travelling in the south?