问题描述：
This is Peter speaking.Who' this?问对方不应该是Who's that?
全文是
A:Hello.
B:Hello.May I speak to Peter,please?
A:This is Peter speaking.Who' this?（就这句话怎么回事）
B:This is Jack.
全文是
A:Hello.
B:Hello.May I speak to Peter,please?
A:This is Peter speaking.Who' this?（就这句话怎么回事）
B:This is Jack.
问题解答：
我来补答展开全文阅读