—What ______ the taxi drivers in Beijing to take up the study of English?—The successful bid for the 2008 Olympic Games.
The stronger the______ for acquiring language skills is, the more quickly a language beginner will learn.
The author used to be a doctor but later gave up the ______ of medicine for full-time writing.
—Can I help you with your heavy box. — ____________.
_________ they were here now, we would be able to celebrate their wedding anniversary.
Mr. Li, a man calling himself Smith wants to see you. ________ he come in?