We the last bus and didn´t have any money for taxi, so we had to walk home.

根据题干中的句子"We the last bus and didn´t have any money for taxi，so we had to walk home."，我们可以得知，因为错过了最后一班公交车并且没有出租车钱，所以只能步行回家。选项C中的"missed"表示错过，符合句意。因此，正确答案是C。