1. 将下列句子按先后顺序排成一段完整的对话：

a How are you, Tom?

b I'm fine, too. Thank you.

c Good morning, I'm Lingling. What's your name?

d Goodbye, Lingling.

e Good morning, Lingling. I'm Tom.

f Goodbye, Tom

g I'm fine, thank you .How are you, Lingling?