I don't know __ .A.where does he come from B.what is his name C.how old he is D.when will he leave选什么?

问题描述:

I don't know __ .A.where does he come from B.what is his name C.how old he is D.when will he leave
选什么?

c
此句是宾语从句
从句要用陈述句语序