This is our contribution to ________ world of the 21st century, ________ world of independence and mutual understanding.
| A．the; / | B．/; a | C．a; the | D．the; a |
I had hardly sat down_____ the telephone rang
| A．than | B．when | C．as | D．after |
I’ll tell him about it_____I see him.
| A．as soon as | B．so soon as | C．while | D．as |
_____ he came, he would bring us a lot of flowers.
| A．Every times | B．one time | C．Every time | D．Once a time |
I am sorry_____ I have caused so much trouble.
| A．that | B．for | C．as | D．since |
_____ it was finished in time.
| A．As the work was difficult | B．Difficult as the work was |
| C．Difficult as was the work | D．As was the work difficult |