What is more useful after it is broken?Why is a river rich?Which table has no legs?

问题描述:

What is more useful after it is broken?Why is a river rich?Which table has no legs?
请尽可能用英语回答啊,

egg,fire alarm,glow stick,frozen chocolate bar,seal on a jar,nuts,piggy bank,code to a safe
it has two banks LOL
timetable,vegetable,table of contents,multiplication table,table cloth,stable :D