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. {#blank#}1{#/blank#}
Sarah's mum： {#blank#}2{#/blank#}
Mike：Good afternoon. {#blank#}3{#/blank#}
Sarah's mum： {#blank#}4{#/blank#}
Sarah： {#blank#}5{#/blank#}
Mike： {#blank#}6{#/blank#}
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.
