l------- This?Yes,it is black.All right.What is your name?I am Helen.Ok.Here you are.Thank.

l------- This?Yes,it is black.All right.What is your name?I am Helen.Ok.Here you are.Thank.
空上填什么句子,
Helen:-------
Teacher:This?
Helen:Yes,it is black.
Teacher:All right.What is your name?
Helen:I am Helen.
Teacher:Ok.Here you are.
Helen:Thank.