1. A coffin

2. Perhaps the child is a native American? Not sure on this

3. Mount Everest was still the highest!

4. She lives in the southern hemisphere

5. It was called 'The Great War' before the second world war

6. LOL, thought about this one, then eventually borrowed the answer...*smacks head* DUH!!!

7. Always are in the same year

8. Because $1990 is worth more than $1989!

9. 9 sheep

10. Once to get 20, you then don't have 25

11. One word!

12. Penguins don't live in the Arctic!

13. Yolks are orange

14. A wooden leg will not take photos

15. I guess they were a father and a mother...

16. He weighs meat

17. The third room because the lions are dead

18. The woman was a photographer (heard this one before)

19. Borrowed this one too (oh the shame ) a matchstick

20. Yesterday, today and tomorrow

21. There are no letter 'e's in the whole paragraph

That was really fun! I run a puzzle club at my school with my friends so I love doing this sort of thing