---The population of Henan ___________ very fast.---I agree. The population problem may be one of the most serious ones today.
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.