일이라

because it's a matter

→ 일
phrase Rare #18,893
because it's a matter Used after a noun to give a reason, meaning “because it is ….”
KO: 급한 일이라 지금 가야 해요.
EN: Since it's urgent, I have to go now.

뜻밖의 일 이라 뜻밖 이라

Because it was unexpected—because it was so unexpected.

— 이반의 어린 시절 (1962)

내일 하지 급한 일 이라 온 겁니다

Do it tomorrow? I came because it was urgent.

— 하얀 리본 (2009)

급한 일 이라

Because it’s urgent.

— 롤라 런 (1998)