Надо найдите ошибки подчеркните их и выпишите нужное слово.

1. What did he do yesterday?

2. When did you go to school?

3. He is your friend, is not he?

4. Did they come last week?

5. Why does Anna want to be a doctor?

6. How much bread is there on the table?

7. How long have you been there?

8. Where is mary walking?

9. They haven't left yet, have they?

10. When were the houses built?