1. 用A~E给下列句子排序，使其组成一段完整的对话。

A. How are you, laura?

B. Bye- bye, Liu Ting.

C. Hello. I'm Liu Ting.

D. I'm fine. Thank you.

E. Goodbye, Laura.

F. Hi, Liu Ting, I'm Laura.

正确顺序: C→→→→→