Вчеркните в пропуски ever, for, just, never, since, so far, twice,

Впишите в пропуски ever, for, just, never, since, so far, twice, yet
1. Have you...seen an elephant?
2. We have done three units of this book...this year
3. I waited...three hours and then I went home.
4. Cindy has...travelled abroad but she wants to.
5. I have read this book... . It was brilliant!
6. They have...come back from the beach and their hair is still wet.
7. Jane hasn't phoned me...last week
8. Haven't you finished doing your hair...?