阅读下面的对话,根据上下文,选择适当的句子将对话补充完整,并将其标号写到相应的横线上。(每小题2分,共10分) A: Welcome to our school! This is my classroom. B: It’s so big. A: Forty-five students. B: A: No, it isn’t. B: A: Yes, we do. It’s on the second floor. This way, please. B:
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