책을 덮으세요

The phrase 책을 덮으세요 means “Close the book.” It is commonly used in classrooms or study settings when instructing someone to stop reading or finish an activity.

Examples:

Teacher ending a lesson:
선생님: 책을 덮으세요! 수업이 끝났어요.
Teacher: Close your books! The lesson is over.

Before starting a discussion:
책을 덮고 질문에 답하세요.
Close your book and answer the question.

Finishing a reading session:
다 읽었으면 책을 덮으세요.
If you’re done reading, close your book.