Sentences

I want to say these sentences in Chinese. Please have a look at my translation.
Thank you!

Hurry up! (I say it to many people) 快点吧!  Would be the best translation since in your English, you did not specify what is to be hurried up.
I can’t wait.  我不能在等 Your version is too formal for speaking.
I need to lock the office.  我須要办公室  Your version is "I ought to lock the office".    Mary Song's version: I am required/demanded to lock up the office.  Huge difference in nuance and intent of your sentence.
Go home!  回家吧! Return home.  Without the suffix, it sounds like a command that you have to obey while with it, it implies caring that you need to go home.  去家 is wrong usage and translation.  This is cultural biase in how words are being used.

快走吧!
我不能等待
我应当锁办公室
去家

Sentences

I want to say these sentences in Chinese. Please have a look at my translation.
Thank you!

Hurry up! (I say it to many people) 快点走吧！
I can’t wait.                                             我等不及了（我不能等了）
I need to lock the office.                    我需要锁办公室
Go home!                                                 回家

快走吧!
我不能等待
我应当锁办公室
去家