Всем привет! Помогите, пожалуйста, сделать задание (без перевода)

change the verb to be into the Past Indefinite

1. I am a pupil.

2. They are at school.

3. His father is a worker.

4. She is schoolgirl.

5. You are tired.

6. His parents are farmers.

7. The girls at the theatre.

8. Peter is ill.

9. Is the doctor at the hospital?

10. Are you ready to go there?