补全对话。
Ivy: Hi, Ms. Jean.
Ms. Jean: 1 , Ivy.
Ivy: Ms. Jean, this is Mike. Mike, 2 3 Ms. Jean.
Ms. Jean: How do you do?
Mike: 4 ? Nice to meet you.
Ms. Jean: 5 , too.
Mike: Oh, Ms. Jean, what’s this in English?
Ms. Jean: 6 a letter.
Mike: 7 8 is it?
Ms. Jean: It’s blue.