unit 6
doing morning exercise   （正在）做早操
having…class   (正在)上……课
eating lunch   （正在）吃午饭
reading a book   (正在)看书
listening to music   (正在)听音乐
keep   保持某种状态
keep to the right   靠右
keep your desk clean   保持你的课桌干净
talk quietly   小声讲话
turn   顺序
take turns   按顺序来


