Transform into assertive sentence

Dear Student, 

Exercise 66

1. No one can touch pitch without being defiled 
2. No man by taking thought can add a cubit to his structure.
3. It does not matter even if the field is lost.
4. A  gentleman should not behave in that way.
5. Everyone knows the owl.
6. I shall never forget those happy days.
7. No one is so wicked to amuse himself with the infirmities of extreme old age.
8. You should waste time in this fruitless occupation.
9. This is not the kind of dress to wear in school.
10. You cannot gather grapes from thorns or figs from thistles. 

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