定语从句中,先行词前有Only,引导词能用Who吗

问题描述:

定语从句中,先行词前有Only,引导词能用Who吗
He is the only one of the students () from Beijing.
A.who is B.who are C.that come

选A,如果是物做先行词的话就用that做引导词,但先行词为人可以用WH0