以下哪个句子里含有同位语从句?
A、 We haven't yet settled the question where we're going to spend our summer vacation.
B、 Where there is a will, there is a way.
C、 This is the town where I was born and grew up.
D、 I don't know where he has gone and what he is doing.
A、 We haven't yet settled the question where we're going to spend our summer vacation.
B、 Where there is a will, there is a way.
C、 This is the town where I was born and grew up.
D、 I don't know where he has gone and what he is doing.