— What is the____of the 2010 World Expo(世博会)? — It is “Better City, Better Life”. A.song B.theme C.custom
—Do you mind if I sit here, sir?—_______. Please sit down.
Jackie, your brother is trying to sleep. Could you please _______ your radio?
Our teacher said there would be ______ books in the new library.
I think there will be ______pollution and ______ cars in the future.
—I am sorry I _______ my exercise book at home. — Don’t forget _______ it to school tomorrow.