8．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 |
Shelly had worked hard for her biology examination so that she could be sure of passing it at her first .
| A．attention | B．purpose | C．attempt | D．desire |
Shortly after the accident,two police were sent to the spot to keep order.
| A．dozen of | B．dozens | C．dozen | D．dozens of |
At a rough estimate,Nigeria is Great Britain.
| A．three times the size as | B．the size three times of |
| C．three times as the size of | D．three time the size of |
There be any difficulty about winning the speech contest now that you’re well prepared for it.
| A．mustn’t | B．shan’t | C．shouldn’t | D．needn’t |
I can hear the Browns' phone bell ringing but no one is answering it; they _______ be at home.
| A．would | B．might | C．needn't | D．can't |