--As we know,China is still a _________ country while the U.S.A. is a _________country.A.developing;developed B.developed;developing C.developed;developing
—What were you doing when the UFO arrived?— I with my dog on the street.
— I ran out of the money. Could I borrow some from you? —Sorry, I have no money, ______.
—Look at the picture on the wall. It ________be David’s. —Yes, his name is on the first page.
— Could you please clean your room?—_________. I’ll do it at once.
—Try to have a healthy lifestyle. It can help you get good ________. — Thanks, I’ll do.