walk on ice 还是 walk in ice?

walk on ice 还是 walk in ice? walk on feet 还是 walk on foot You should walk slowly on the ice.改为祈使句 It is d____to walk on the thin ice. walk on walk this way还是walk on this way go for a walk还是go on a walk? walk on the street还是用in? walk ______Nanjing Road.填in还是on walk cross还是walk across The ice is too thin for the fat man to____为什么后面是walk on?而不是walk on it 、walk、walking?理由 walk walk walk walk walk walk walk