根据情景, 选句子完成对话。
(下午, Sarah带同学Mike回家, 把他介绍给妈妈, 然后两人相约一起画画。)
Sarah:Mum, this is Mike.
Sarah's mum:
Mike:Good afternoon.
Sarah's mum:
Sarah:
Mike:
A. OK!
B. Mike, this is my mum.
C. Good afternoon, Mike.
D. Nice to meet you.
E. Let's paint.
F. Nice to meet you, too.