根据句意和首字母或汉语提示完成单词，使句子正确，句意通顺。

1. Sweden (瑞典) lies in the north of Europe. It is the fourth largest country in Europe with an a______

    of 450, 000 square kilometers.

2. Children are p______ for doing some housework so that they can learn how to make money for their

    own use.

3. It is very important to get e______ sleep every day to keep healthy.

4. Andy moved to China in 2005. She has found many differences b______ Chinese and Americans.

5. There was a fire in the office yesterday. L______, all the people were saved.

6. To our ______ (惊讶), the factory is still pouring waste water into the river near it.

7. The girl ______ (花费)a lot of time collecting stamps last year.

8. It is a pity that there are a lot of people who do not know the ______ (重要) of time. They spent their

    time smoking, drinking and playing.

9. Chinese parents are strict with their children and usually stop them from ______ (逗留) out too late

    with friends.

10. Do you have bright ideas for inventions that ______ (改变) the world or, at least, make life easier for

     somebody?