They'd speak up, and do their damnedest to save their friend.
Ah, then, you have quarrelled, and I am to speak up for you?
"Speak up and deny what he says," said the King to the Cook's son.
Speak up, Margaret, before some other rude person interrupts.
"You must speak up if you expect me to hear, young lady," growled Ebenezer.
I want to ask you a question; speak up, ...