boo|booed|booing

宝贝，我们周末去看电影好吗？

Hey ___boo, do you want to watch a movie this weekend?

当演员忘词时，观众开始发出嘘声。

The audience ___booed when the actor forgot his lines.

球迷们对裁判的判罚不满，开始发出嘘声。

The fans started ___booing when they disagreed with the referee's decision.