Ricky stepped forward to front of the stage and began to sing in loud voice.
Hurry up﹗The train ______. You know it ______ at 9:00 am.
Is this the first time you_______ Beijing?
His singing career began to ______ in the late 1990s.
Tsinghua University, ______ in 1911, is home to a great number of outstanding figures.
__________ you know, this is the day the quake happened