丫丫和妈妈在公共汽车上。你知道在行驶着的公共汽车上不应该做什么事情吗?⒈不应该让司机叔叔给自己讲故事。⒉不应该离开妈妈,在公共汽车的车厢里跑来跑去。⒊不应该自己去捡掉在车上的玩具。⒋不应该把头和手伸到车窗外。在公共汽车上@艾乐@王琛 Ya Ya and mother in the bus. Do you know what should not be done on the moving bus? ⒈ uncle should not let the driver tell stories to himself. ⒉ should not leave my mother, running in the bus compartment. ⒊ You should not pick up the toy in the car by yourself. ⒋ Do not put your head and hands outside the window. On the bus @ Aile @ Wang Chen