I purchased this at a cram school, but it has been stored unused. This is a vocabulary training workbook for English idioms, designed to prepare students for entrance exams at top-tier schools. It contains 850 problems. - Title: English Idioms 850: Winning Training - Series: Waseda Academy - Contents: English idiom training workbook - Number of pages: 850 - Illustrations: With illustrations - Target audience: Preparation for entrance exams at top-tier schools