用适当的介词或副词填空。

1.There were ten people injured in the accident,________ three children.

2. You'd better make full use________ your time.

3. You will find the hospital _______ the end of the road.

4. As everybody knows, China has the largest number ________ people.

5. Tom came up _______a good idea at the meeting.

6. He has a good command ________spoken English.

7. What are you basing this theory __________?

8.I can spare no time ________present.

9. We float around in the air and a slightest touch may send us floating off _______the opposite direction.

10. He played a leading part _______the negotiations ( 谈判 ).

法律实证主义其实是对于“法实际是什么”的研究，在不同的实证主义者看来，法是不同的实际存在的事物。法律实证主义的三位代表人物约翰·奥斯丁、哈特、汉斯·凯尔森在某天偶遇，对此展开了激烈的辩论。请问下列组合中符合三位学者各自观点的有： ①法就是由主权者颁布的，服从习惯并保证实施的命令 ②那些无法体现为主权者命令的行为准则，就无法使用“法”这个词汇加以描述 ③命令的约束力并非来自本身，而是来自于规范 ④法就是由最高效力的基本规范通过层层授权的方式建立起来的规范体系 ⑤应当将法律界定为由“初级规则”和“次级规则”结合建立起来的规则体系

A．①②

B．③④

C．③④⑤

D．①②⑤