on one could account for the fact that one of the boxeswas extremely heavy 可以换成one of the boxeswas extremely heavy that on one could account for the fact
问题描述：
on one could account for the fact that one of the boxeswas extremely heavy
可以换成one of the boxeswas extremely heavy that on one could account for the fact
答
A,responsible for sth.对某事负责没有人可以不承认（所有人都承认）他要对那个孤独男孩的死负责 A be responsible for 对.负责,楼上的,