4 . 根据语境，选择下框中的单词或短语，必要时用正确的形式填空。框中有两个单词为多余单词。

sharp       hesitate       precious       otherwise       earn a living recycle       select       assist       carry on       indeed

1. During the gold rush, ________, some Chinese opened up shops and restaurants in Chinatown in San Francisco.
2. As the first woman ________ to make a trip into space, Tereshkova felt lucky and proud.
3. Despite the difficult situation, Dr Bethune did whatever he could ________ the Chinese people.
4. Astronauts have to use tape to stick everything down while working in space because everything would float off ________.
5. In space, astronauts collect all dirty water so that it can ________ for later use.
6. Many Americans complained about the ________ increase in the cost of health care and health insurance recently.
7. After ________ for several moments, Gary finally went into the expensive tailor’s shop and asked to see the suit in the window.
8. To a person nothing is ________ than their life.

5 . They turned their horses’ heads homewards, and reached the Chase at about eleven o'clock, dead tired and ________（几乎心碎了）. （根据汉语提示完成句子）

7 . 根据句意内容，从方框中选出正确的选项，完成下列句子。

A. folding     B. attempt     C. otherwise     D. generous     E. have yet to

1. You’d better go now, ________ you’ll miss the train.
2. His first unsuccessful ________ didn’t stop him moving forward.
3. My deskmate is always ________ with his time when I turn to him for help.
4. Follow the instructions and you can make the shape of a fish by ________ the paper.
5. The details of the contract ________ be corrected and need to be fully discussed later.

10 . Military helicopters dropped food and medicine to the earthquake survivors that remained out _______ in remote mountain villages. (用适当的词填空)