Sun Yang, a young Chinese swimming talent,       several gold medals before the 2012 London Olympics.

—Why weren’t you at the meeting?—I ________ for a long-distance call from my aunt in America.

By the time you have finished reading this book, your meal ______ cold.

--Have you ever been here before? ---Well, I once _________ here for four years. Those days are really unforgettable. 

Professor James will give us a lecture on the Western culture, but when and where ____ yet.