The electricity () in our rooms is one of his greatest inventions.

题目

The electricity () in our rooms is one of his greatest inventions.
A.to shine B.shine C.shining D.shone
为什么选c不选A
Today,with great trains ______ on electricity,we can travel much faster.
A.to run B.ran C.run D.running
为什么选d不选a
With our homes and the streets of town and village () by electric lamps
A.to light B.light C.lit D.lighting
为什么选c

答案