10. C
11. C
二.
1. leaving 现在进行时表示将来。
2. laughed at 因他的傻话而发笑。
3. organized
4. chance by chance 偶然。
5. against be against反对。
三.
1. ask,will help
2. was,in fact
3. In order to
4. if that was
5. had a good / great time