根据句意及首字母提示，在每句的空格内写上所缺单词的正确形式。

1. Great changes have t________ place in our country during the past ten years.

2. A j_______ high school is for students between 13 and 15 years old.

3. He is a manager of three different b_______.

4. He is a careless boy and he pays little a________ to his handwriting.

5. —Would you m_______ waiting a minute?  —Not at all.

6. He d_______ a lot of money to the poor though he was not rich.

7. Air, food and drink are necessary to s_______ life.

8. Let me i_______ myself. I'm a student of No. 1 Middle School.

9. The news appeared in the 1_______ newspapers.

10. When he was young, he received a good e________ at a very fine school.