055. It’s on the tip of my tongue.
->This expression is used when you are sure that you know something, but somehow it doesn’t quite come to you.
A: Did you see the new employee in our company?
B: Yeah. Do you know her name?
A: It’s on the tip of my tongue but I just can’t remember.
B: Well, let’s just ask the manager?
A: I’ve got a better idea. Let’s just ask her instead.