---Excuse me, is that a radio?---No, it’s a ______. My grandma buys it for me to learn English.A. tape player B. model plane C. ID card
—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.