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.