10. Where waswere you yesterday?

11. When the dinner bell rangrung, we all comecame running in.

12. He don'tdoesn't know what you said.

13. To what hospital have they takentook him?

14. I sawseen him a few minutes ago.

15. I sawseen him yesterday.

16. I should haveof brought my book.

17. My winter coat is woreworn out.

18. Have you ever roderidden in an aeroplane?