下列熟语中，所使用的修辞手法不同于其他三项的一项是：

In the cave they found the very book, the cover of _______was torn.

＿＿＿＿to your performance at school

John seems to be upset. What happened?— The boss disliked the plan he _____ for the new project?

Nelson Mandela devoted all his life to the struggle of the African people and of every nation that seeks freedom