질문을 받았는데 뭐라고 할지 모를 때 잠깐 생각 할 시간을 벌기 위한 conversation filler

“음...어…”이런 더듬는 말은 되도록 피하고 이럴 땐 conversation filler들을 넣어보세요!
Oh, I've never thought about that before, but I think ~.
That's a very interesting question ~.
Well, there are many different opinions ~.
I'd never really given it a lot of thought. However ~.
Let me think about that one ~.

from Siwonschool Cambridge IELTS 13 Speaking Test 1 Part 3 by Laura Kim