Saying "I don't know"

Day 7-英语学习打卡
Date:26th Sep 7：30-8：00
Topic:EC沟通中级
Saying "I don't know"

→I don't know.
→I have no idea.
→I can't tell you...

I have a chance to get another job and I don't know what to do.
But I'm getting cold feet. I don't know if I'm good enough.
Oh, I'm afraid I don't know that one, miss.
I don't know where to begin my speech.
The next thing you know, I wake up, I'm in my room. I have no idea how I got there.
I have no idea about any of this.
Stuff about me dating Kim Kardashian, I mean, I have no idea where that came from.
I have no idea what you just said.
Wow, I can't tell you how many requests we get for this next item.

New words:
getting cold feet:used to express worry or fear about doing something

Example: "He won't be joining the contest because he's getting cold feet."