27. When he heard the news, his heart ______ very fast.
I am looking forward to _______ you again next month.
---When ______ again? ---When he ______, I’ll let you know.
The Yellow river is the second ______ river in china.
So many great events _____ that it is bound to be a most special year in history.
---Are you still working in Shanghai? ---No, I’m working in Hangzhou now. I ______ in Shanghai for three years.