In the rice-growing world, ______ Chinese scientist, Yuan Longping, is ______ leading figure.
Mr. Irvine, who ________ in a high school for forty years, is now living in retirement.
-We could have asked Mr. Zhang for help. He is always ready to help others.-I ________ that. A long time _______.
Both teams are among the most excellent. We mustn’t miss the ______ game.
Mary must keep her mind on her medical studies now, so it would be years ______ she could think about marriage.
His sudden ______ of violent anger put an unpleasant end to the meeting.