điền từ để hoàn chỉnh đoạn hội thoại:::::::: John : Hello Mai. How are you today???? Mai : I'm fine thank you////// John : This is your classroom????? Mai: No, ........ That is my classroom ///// John : ........ many students in your class???? Mai : No, there aren't. My class has only fifteen students /////// John : ....... teachers????////// Mai: Mrs. Chi, Miss. White and Mr. Cuong