( ), Tom knows something of electricity.

A.As he is a child
B.As child he is
C.As child is he
D.Child as he is
出自:当代英语语法概论

完成拼图验证

按住下方滑块,将拼图拖到缺口处后松开。

拼图背景,将小拼图拖到缺口处
向右拖动滑块