Cars do cause us some health problems—in fact far more serious _______ than mobile phones do.
—Have you finished your experiment report, Jane?—Oh, my God. I’ve _____ forgotten all about that.
_____ your classmates and you will make more good friends.
—What’s the matter with you, Sandy?—I’m _____ a bad cold. I think I am dying.
Have you _____ your things, Bob? The train is leaving at 2:30 this afternoon, so we don’t have too much time.
Try to _____ the children down. They’re too excited.