Now most families have only one child _____ our country’s one-child policy.
Tom is weak in physics. He always feels _______ before he takes a physics test.
---- There is _______ interesting book on the teacher’s desk.---- Oh, ______ book is Wei Fang’s.
—Where are you? I can’t see you in the hall.—______. I’m just one block away.
—______ did Samuel stand by the window so long?—To see what would happen.
—What else do you need for the trip, Mum?—______ else. I think we have got everything ready.