Hurry up! The plane is _______ in fifteen minutes.A thinking of B waiting for C taking off D walking up
—How old are you?—_______ .
—What’s this _____ English?—It’s _____ orange.
—What are ______ over there(那边)?—______ are buses.
—What class is Wei Li in?—She is in ______ .
— These are _____ and ______ .