【2012贵州毕节】—Were you at home at 9:00 last night? I called you but nobody answered.—Sorry,I ______ at that time.
You_______ play with the knife. You ______ hurt yourself.
Workers can’t be made ________ for twelve hours a day.
--Did you see who the driver was? ---No, the car ran so fast _____ I couldn’t get a good look at his face.
---Wow, so many new houses! I can’t believe that. It used to be a poor village. --- Yes,_________ has changed here.
--Is your father a teacher? ---well, he _______.