题干
Peter: Mom. （）
Mom: Nice to meet you, Mike.
Mike: Nice to meet you, too.
A：I'm Peter.
B：This is Mike.
答案(点此获取答案解析）
B
Peter: Mom. （）
Mom: Nice to meet you, Mike.
Mike: Nice to meet you, too.
A：I'm Peter.
B：This is Mike.
