玲玲和妈妈逛街时，遇到了英语老师Miss Sun，让我们来看看她们说了些什么吧。选择合适的选项补全对话。

A. She is a doctor. B. Good morning. C. Thank you. D. I'm fine, thank you. E. I'm Lingling's English teacher.

Lingling: Good morning, Miss Sun.

Miss Sun: How are you?

Lingling: This is my mother.

Miss Sun: Nice to meet you.

Lingling's mother: Nice to meet you, too.

Miss Sun: Lingling is a good girl.

Lingling's mother: