__________modeling business is by no means easy to get into，the good model will always be in demand.
| A．While | B．Since | C．As | D．If |
After he had been hit by many hardships and failures, the young man _____ at last.
| A．gave out | B．gave away |
| C．gave in | D．gave off |
Mr. Johnson’s son ______ lives in Chicago is a doctor.
| A．who | B．whom | C．whose | D．which |
We don’t need to do extra work this evening. The day’s work is almost ______ now.
| A．at the end | B．at an end |
| C．by the end | D．in the end |
Three years has passed ever since _____.
| A．he has joined the army | B．he joined the army |
| C．he has been in the army | D．he has been a soldier |
According to my grandma, it is a good idea to drink chicken soup when you have a cold. _____, scientists agree with her.
| A．Sooner or later | B．For example |
| C．To be honest | D．Believe it or not |