Translation of "들었어요" in English

공포감이 사라지고 울다 잠이 들었어요.

and I could cry myself to sleep after the adrenaline wore off.

그 때 이런 생각이 들었어요.

And I couldn't help but think:

그 때 처음으로 장전된 총이 발사되는 걸 들었어요.

That was the first time I had ever heard a fully automatic weapon discharged.

이런 생각이 들었어요 '왜 난 저렇게 못 하지?'

I wonder, you know, not why can't I do that,