从方框中选取适当的句子完成对话(有多余项)。

A. What's your name? B. How are you? C. Good afternoon D. It's 20170101. E. Stand up! F. How old are you?

T: Class begins (开始)?

M:

T: Good afternoon, class.

Ss: , Mr Zhang.

T: Sit down, please.

S1: My name is Li Liang.

T:

S1: I'm 12.

T: What is your school ID card number?

S1: