他昨天打扫了整个房间。

He ___cleaned the entire room yesterday.

你最好快点，否则会迟到的。

You'd better ___be quick, or you'll be late.

单词'baby'以字母B开头。

The word 'baby' starts with the letter ___B.

钢琴老师让我弹奏降B调的音阶。

The piano teacher asked me to play the ___B-flat scale.

嘿，哥们，今晚去看电影吗？

Hey ___B, wanna catch a movie tonight?