— Are you a teacher? — No, but I ______. I worked in a middle school for three years.
11. The little boy many questions at me, leaving me embarrassed.
10. -----Can you attend the meeting tonight? -----No,the manager about something important.
9. It long before we the result of the experiment.
8. Look, it is cloudy now. I’m sure .
7. I when there came a knock at the door.