问题描述：
SINCE用什么提问的?
SINCE解释为自从用什么提问?
I saw someone dancing in the next room just now!(同义句)
Someone _____ ______ ______ in the next room just now!
SINCE解释为自从用什么提问?
I saw someone dancing in the next room just now!(同义句)
Someone _____ ______ ______ in the next room just now!
问题解答：
我来补答展开全文阅读