At what time would you like us to call you tomorrow morning?
您想让我们明天早上什么时候叫醒您？
I need to make sure I'm waken up by 5:00.
我一定得在5点前被叫醒。
At what time do you want me to call you up, sir?
您要我什么时候叫醒您？
At 6 sharp tomorrow morning, please.
请在明早6点整叫醒我。
What time would you like the call?
您希望我们几点叫您？
Call me at 7:00 a.m.
早上7点钟叫我。