Помогите перевести предложения на английский .с 8 до 23

8. Why you haven't been at work last friday? 
9. Which subject you choose now?
10. Why you started this conversation?
11. Why you didn't call me yesterday? I waited for a long time.
12. Who broke the window? Who did that?
13. I haven't seen my friends on this week. 
14. In this month I didn't bought anything new for myself.
15. Many new things happened in this year.
16. I haven't read anything interesting for a long time.
17. I read this novel a long time ago, I even can't remember the author.
18. We are here for a long time. The time to go back home. 
19. We were in Sochi many years ago. From that time city have chanced.
20. We meet each other a long time ago and from that time we are friends. But we haven't seen each other for half a year. Everyone is so busy.
21.Where did you put my passport?
- I haven't seen it.
22.- Where have you been?
I was in canteen.
23. Where did she go? I need her very much.