用适当的介词填空：
The police caught the criminal and two months later, he was taken ____ prison where he would spend almost the rest of his life.
Elias was put_____ prison for breaking the law when he was young.
We believed _____ three principles in serving our customers.
In the past, millions of Chinese people fought _____ Japanese invaders in order to save the motherland.
We are all worried _____ his health,so we advise that he have a three-day rest.