移动化趋势锐不可挡，平均（）的人通过手机使用微博。
参考答案：0.75
用所给词的适当形式填空。
1. Liu Qiang had to _____ (finish) his homework first before he could go out for play.
2. I think the monkey is much _____ (clever) than other animals.
3. Little Tom did the cleaning _____ (carefully) in our class.
4. Our English course _____ (teach) by an English woman next term.
5. A bridge _____ (should build) over the river.
（）
A．27
B．8
C．21
D．18
（）