在需要的地方填上冠词，不需要的地方话X。

1. Washington is _____ capital of _____ USA.

2. _____ Turners are living at the end of _____ Turner Street.

3. He joined the army in _____ spring of _____ 1998.

4. _____ old man is _____ teacher. He likes playing _____ basketball after _____ supper.

5. After I had _____ quick breakfast, I hurried to school.

6. Are _____ sheep kept by _______ farmers for producing _____ wool and _____ meat?

7. They went to _____ People's Park, but we both went to _____ People's Cinema yesterday.

8. I often watch _____ TV in _____ evening.

9. _____ day of _____ December 20, 1999 is Monday.

10. I think _____ math is more important than any other subject.

人类所面临的人口问题、资源问题、环境问题和能源问题的解决和控制，都要以______原理为基础。