用适当的冠词填空。（不需要冠词的填“／”）
1. There is _____"u" and _____“s” in _____ word“us”．
2. This is _____ useful book. I've read it for _____ hour.
3. _____ sun rises in _____ east.
4. _____ Changjiang River is _____ longest river in _____ China.
5. Washington is _____ capital of _____ USA.
6. _____ Turners are living at the end of _____ Turner Street.
7. He joined the army in _____ spring of _____ 1998.
8. After I had _____ quick breakfast , I hurried to school.