—How many _______are there ?—There are twenty.A. birds B. a bird C. chair
Why not ________ an English club to practice _________ English?
—Look at the girl with a pair of glasses over there. Can you tell me ______? —She is a nurse.
—__________ will your father be back? —In two months.
_______ people lost their homes in Japan’s earthquake.
The 30th Olympic Games will be held in London ________ 2012.