题目内容：

it is the hardest time we have ever had.During that time,we ate almost everything_____
A to live on
B living on
C to be lived on
D being lived

优质解答

A
live on 生存下去、活下去（on的用法同go on, keep on）
动词不定式表目的,作状语,吃所有东西为了可以生存下去