The last page. Yonsei Korean 4 is a book published by World Book Publishing Company in 20 18. The author is Yonsei University Korean School. Because every learning book will have after-class questions to answer, and the answers to after-class questions are set at the end, so the answers are all on the last page. Content abstract: Yonsei Korean 4 is an intermediate textbook, suitable for intermediate learners. All the contents in the book are translated into Chinese, and the answers to the exercises are attached.