选择恰当的句子补全对话。
Ms Smart: Good afternoon, Lingling.
Lingling: , Ms Smart.
Ms Smart: ?
Lingling: I'm fine, thank you.
Ms Smart: ?
Lingling: It's a ball.
Ms Smart: What's that?
Lingling: .
Ms Smart: Sit down, please, Lingling.
Lingling: .
A. It's a schoolbag B. Thank you C. Good afternoon D. How are you E. What's this |