In the final exam of last term, our maths teacher Mr.Wu gave us ________we all couldn’t work out .
After he had been hit by many hardships and failures, the young man _____ at last.
Mr. Johnson’s son ______ lives in Chicago is a doctor.
We don’t need to do extra work this evening. The day’s work is almost ______ now.
Three years has passed ever since _____.
According to my grandma, it is a good idea to drink chicken soup when you have a cold. _____, scientists agree with her.