— Why didn’t they complete the task in time?
— Because it was not until late afternoon _____ they began to solve the major problem．
| A．when | B．that | C．before | D．which |
Your story is perfect; I’ve never heard _____ before．
| A．a better one | B．the better one | C．the best one | D．a good one |
We have a wide selection of sweaters that will appeal _____ all ages, and in particular the teenager market．
| A．for | B．in | C．to | D．on |
— You know what? Tom wants to be a politician after graduating from college．
— Are you kidding? He will never _____ a person like that．
| A．change | B．turn | C．make | D．get |
It’s going to be some time _____ he sees his father again, _____ business has just been started in Switzerland．
| A．after; who | B．before; whose | C．when; whose | D．since; who |