用所给动词的适当形式填空。

l. Mr. Brown was disappointed to see the washing machine he had_____ (repair)went wrong again.

2. Children's being addicted to the Internet gets their parents _____ (worry).

3. Many feared that Columbus would fall off the edge of the earth,____ (believe) to be fiat.

4.  _____     (take)his health into consideration, he has to be sent to hospital at once.

5. Mr. Smith,  ____     ( tire ) of the ___ (bore) speech, started to read a novel.

6. The girl let out a  _____ (frighten) voice at the sight of the snake.

7. His____   (frighten) voice scared the boys away.

8. The man is hard to ____     (deal with).

9.It is no use____    (argue) with him.

在某西方国家，高等学校的学费是中等收入家庭难以负担的，然而，许多家长还是节衣缩食供孩子上大学。有人说，这是因为高等教育是一项很好的投资。以下哪项对以上说法提出质疑

A．一个大学文凭每年的利润率是13％以上，超过了股票的长期利润率。

B．在25～29岁的人中，只有高中学历者的失业率是受过高等教育的人的3倍。

C．科技发展迅速，经济从依赖体力转变为更多地依赖脑力，对大学学历的回报进一步提高。

D．随着计算机技术的发展，许多原来需要高技术人才承担的工作可以雇佣只会操作键盘的技工来干。