Mum,----is my friend,Li Lei.Li Lei,-----is my mother.

问题描述:

Mum,----is my friend,Li Lei.Li Lei,-----is my mother.
Mum,----is my friend,Li Lei.
Li Lei,-----is my mother.
A.this;this B.that;this C.this;that D.this;she

选A,听我的,准没错!^0^