你能大声点吗？我们在后面听不见。

Could you ___speak ___up? We can't hear at the back.

人们开始喊他们听不见我，我应该大声点。

People started to shout that they couldn't hear me and that I should ___speak ___up.

会议期间，你需要大声点，你的想法才能被听到。

During the meeting, you need to ___speak ___up for your ideas to be heard.