과제는

과제는

"과제는" means "The task is" or "As for the assignment."

In this sentence, '과제는' refers to a specific assignment that was the topic of discussion or focus, marked by the topic particle '는'.

어제 제출한 과제는 어렵지만 보람 있었어요.

The assignment submitted yesterday was difficult but rewarding.

Here, '과제는' again points to a specific task or assignment introduced earlier or understood in context as the topic.

그 과제는 다음 주까지 마무리해야 합니다.

That assignment must be completed by next week.

In this usage, '과제는' refers generally to assignments as a class or category, indicating an ongoing topic.

과제는 항상 시간이 걸리는 일이에요.

Assignments are always time-consuming tasks.