거 알죠

you know that..., right?

→ 것
phrase Rare #20,929
you know that..., right? A conversational way to check that the listener knows or remembers something. 거 is a casual form of 것 in this pattern, and 알죠? means “you know, right?”
KO: 내일 시험 있는 거 알죠?
EN: You know we have an exam tomorrow, right?

들어가면 담배는 피우는 거 알죠?

You know you can't smoke once you go in, right?

— 더 플랫폼 (2019)

내가 사랑하는 거 알죠?

You know I love you, right?

— 맨 프럼 어스 (2007)

우리 애 아빠 공무원 인데 큰일 나는 거 알죠?

My child's father is a civil servant, so you know this is a big problem, right?

— 마더 (2009)

아들이 죽은 거 알죠?

You know your son died, right?

— 빈폴 (2019)