92. The international police has come into existence and they were ____ the key to global security.
| A．thus | B．for | C．or | D．Otherwise |
It's reported that a plane with five people __________ crashed several days ago.
| A．on board |
| B．on the board |
| C．in board |
| D．in the board |
__________ of 5000 visitors came to the exhibition. And __________，the museum got an income (收入)of $10,000.
| A．In total；totally |
| B．A total；in total |
| C．Total ； totally |
| D．Total ； a total |
The book cost me 12 yuan in all, postage __________.
| A．included |
| B．including |
| C．includes |
| D．is included |
Walking alone in the dark, the boy whistled to __________ his courage.
| A．hold up |
| B．keep up |
| C．set up |
| D．take up |
I don't think the experiment is __________ failure. At least we have gained __________ experience for future success.
| A．/;the |
| B．a；the |
| C．/；/ |
| D．a；/ |