阅读对话，判断“正确”还是“错误”。
Betty: (Knocking at the door)
Mr. Han: Who is it? Go and see, Meimei.
Han Mei: Oh, it's you, Betty. Glad to see you.
Betty: Hi, Han Mei. Glad to see you, too. Is everyone in?
Han Mei: Yes. We are all here. Come in, please.
Betty: Thank you.
