All work and no play makes Jack a dull boy, which suggests that work and play do not ______ but promote each other.
| A．condemn | B．convert |
| C．contradict | D．confirm |
The problem of the present world is that those who are imaginative have little experience_________those who are experienced have weak imagination.
| A．unless | B．although | C．because | D．while |
He ran all the way to the station only _______________ the train had already left.
| A．find | B．to find | C．finding | D．to have found |
Miami and Oklahoma City, both of ______were the last two undefeated teams in the NBA this season, lost for the first time on January 3rd.
| A．whom | B．them | C．which | D．those |
Shopping on the Internet enables people not to search for goods from one store to ______.
| A．others | B．the other | C．another | D．the rest |
We’d better _________ when he is thinking, as he prefers to solve problems on his own.
| A．wake him up | B．set him aside |
| C．leave him alone | D．ring him up |