I don't know B.A.where does he live B.what is he doing C.where he lives D.what he is dring it

问题描述:

I don't know B.A.where does he live B.what is he doing C.where he lives D.what he is dring it
I don't know B.
A.where does he live B.what is he doing
C.where he lives D.what he is dring it

C.宾语从句,疑问词+陈述句 格式.