life is difficult,this is one of the greatest---(ture)

问题描述:

life is difficult,this is one of the greatest---(ture)

是填写truth吧。你那个是ture?有没有打错?

应该用truth,true的名词形式,表示“真理”。生活是艰难的,这是一大真理。

true吧?
life is difficult,this is one of the greatest truth.