—Tommy, don't make a noise! If you have any questions, please your hands. —Sorry, Mr. Smith. I won't do it again.
---How does your brother like the song Two Butterflies? ---Great! He _____ such a beautiful song before.
-- How are you feeling here? --- It’s quite hot. I don’t know _____ to go or stay.
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.