There is a doubt where he comes from?WHERE不是副词吗?怎么做FROM的宾语

where 做 from宾语? where are you from 中 where 是做from 但是where 是副词怎么可以作宾语? Where is he from Where ____he from?He ____from China?a,is come b,is comes c,d where is he from ? 怎么回答? Where does he comes from?（改错） where ideality comes from? "Where is he from?"Clara asked.(改为宾语从句 I asked him_____ A．where he comes from B.where does he come Where ( )he from?He( )from China.A "I have no idea where he comes from."是同位语从句吗?如果是,为什么连接副词wher Where is he from?=Where（ ）he（ ）from?