倒装句:Our country is becoming richer and stronger.______________

问题描述:

倒装句:Our country is becoming richer and stronger.______________
A.So it is B.so is it C.It is so
为什么选A?

郁闷……是选择题啊?等等,我修改答案一下……
选择A.
so + 主语 + 助动词,表示“...确实是”