Английский,обращаюсь за помощью)

Найти в каждом пункте одну грамматическую ошибку и исправить её
1. When have they done it?
2. It is not his cat. It is our.
3. Do not bother me! I write a business letter.
4. She is writing a book. Book is dedicated to social inequality.
5. Who does know Spanish in your group?
6. When she had heard a cry she looked back.
7. I have three children boy and two girls.
8. The documents have already signed.
9. How are you? I am good, thanks.
10. Has he to get up early to come to work in time?
11. The book was written Pushkin.
12. I usually have coffee without a sugar.
13. Do you expect me do it without any help?
14. Woman appeared round the corner dressed in all black.
15. Where are belongings of Steve?
16. I live in big city.
17. Open window!
18. I have never passed through right wing of this building.
19. What are the administrative parts of UK?
20. When we arrived our children slept.
21. If I will meet her I will ask about it.
22. We thought it will be easier.
23. All the children like ice cream.
24. Do I must to rise at 4 a.m.?
25. I canned dance all night when I was young.

9. I'm FINE, thanks 14 . Woman appeared FROM AROUND the corner dressed in all black. 15 WHAT BELONG TO Steve? 19 What are administrative parts of THE UK? When we arrived our children HAD slept. 21 If I meet her, I will ask about it. 22 We thought it WOULD be easier.