【单选题】The children must . [ ]
【单选题】Look at the children. They’re having fun in the river.
【单选题】在工伤事故分类中,按照事故类别可以划分为( )类别。
【简答题】Look! The children (play) football on the playground.A. are playing
【单选题】Look, the children _____ in the gym.
【单选题】Look! The children______the tree.
【单选题】Look! The children are ____ the school bus.
【单选题】工伤事故分类,按照事故类别可以划分为( )类别
【简答题】They didn't look after the children properly.
【单选题】在工伤事故分类中,按照事故类别可以划分为()类别。