那个捣蛋鬼把全班同学的笔记本都藏了起来，当作恶作剧。

The ___mischief-maker hid all the classmates' notebooks as a prank.

那个男孩总爱挑拨同学之间的关系，真是个捣蛋鬼。

That boy always stirs up trouble between classmates; he's a real ___mischief-maker.