单项选择题
A．The water would come from the open cups. B．The water would spill all over their food. C．Crumbs would float in the cups. D．The cups would float in the air.
A．over the water B．beside the water C．under the water D．on the water
A．Before the twentieth century. B．Early in the beginning of the twentieth century. C．At the dawn of the first day of the twentieth century. D．After the dawn of the twentieth century.