Usages of gwaje
과제를 금요일까지 끝내야 해.gwajereul geumyoilkkaji kkeutnaeya hae.
I have to finish the assignment by Friday.
수업 전에 과제를 제출해야 해요.sueop jeone gwajereul jechulhaeya haeyo.
I have to submit the assignment before class.
과제를 완료했어요.gwajereul wanryohaesseoyo.
I completed the assignment.
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