Ответ:
2
11. He finished the work.
Did he finish the work?
He didn't finish the work.
12. She is writing a letter now
Is she writing a letter now?
She is not writing a letter now
13. My parents work at the post-office.
Do my parents work at the post-office?
My parents don't work at the post-office.
14. Tom likes orange-juice.
Does Tom like orange-juice?
Tom doesn't like orange-juice.
15. Jim was speaking to John.
Was Jim speaking to John?
Jim was not speaking to John.
3.
16. I am a student now.
17. It was a good day yesterday.
18. Our sportsman was the best last competition.
19. The workers are at that station now.
20. She is hungry.