问题描述: ----Hello,2553685,______?----This is Li Yang speaking. 1个回答 分类:英语 2014-12-10 问题解答: 我来补答 who is it 不确定是谁的时候用it 再问: A who are you B what are you C who's this D who's that 再答: a 展开全文阅读