nhiƯt liƯt chµo mừng thầy cô giáo đến dự lớp Teacher: Trơng Đức Sỹ Sing the song :Hi,How are you? Sit down Look at the board Stand up Put your hand downRoom commands Open your book Please be quiet Close your book Raise your hand Take out book your Take out your book Book your close Close your book Raise your Open book up stand hand Stand up your Open you Up stand stan