2 . It wasn’t long ________ we were surrounded by enormous sand dunes towering above us on all sides. (用适当的词填空)

3 . Hardly ___________ she had the time to sit and have a rest when the phone rang again. (用适当的词填空)

5 . 人们通常认为，那些具有高智商的人能在短时间内理解抽象的概念，作出区分，从而得出正确的结论。(believe) (汉译英)
______________________________________________________

6 . While driving home, ________ ________ ________ ________ (我突然想到) that I had forgotten to buy milk. （根据汉语提示完成句子）

7 . It was the first time that I __________ (be) a volunteer in MSF. (所给词的适当形式填空)

8 . I appreciate ________ the opportunity to work in your company and would appreciate ________ if I could get promoted.

A．to be given; it

B．being given; it

C．giving; that

D．being given; that

9 . It is widely acknowledged ________ Professor Hawking was one of the greatest physicists in the world. (用适当的词填空)

10 . It ________ (estimate) that the project will last more than ten years. (所给词的适当形式填空)