他们担心他可能还藏着另一个令人讨厌的惊喜。

They were worried he might ___have another nasty surprise ___up his ___sleeve.

父母应该总是藏着一些东西来应对挑战。

Parents should always ___have something ___up their ___sleeve to deal with challenges.

一个好的扑克玩家总是藏着几张牌。

A good poker player always ___has a few cards ___up his ___sleeve.