C- Change into the past. 1. He is a good student.
2. They are here.
3. It's all right.
4. We are busy.
5. She is happy.
6. They are at school.
7. I'm not in the garden.
8. They aren't sad.
9. Where is he?
10. Isn't he at home?
11. It isn't important.
12. Is the lesson difficult?
13. Who are they?
14. Are the windows open?
He was a good student
they were here
it was all right
we were busy
she was happy
they were at school
I am wasen't in the garden.
they weren't sad
Where was he?
Wasen't he at home?
Was the lesson difficult?
не поняла
Were the windows opened?
проверьте,могу ошибаться.