Hello,Who's----?Hello.---Mary speaking

问题描述:

Hello,Who's----?Hello.---Mary speaking
A.this;This is B.that:This is C.that; lam D,he; l am

B
电话用语
that 你
this我
祝你学习进步,更上一层楼! (*^__^*)
不明白的再问哟,请及时采纳,多谢!