Thank you for viewing. This is a set of the DUO 3.0 textbook and review CD. It is a review CD for DUO 3.0, which contains over 1600 words and idioms. There are pink marker markings up to page 23. Title: DUO 3.0 Textbook and CD/Review Contents: Contains 1600+ words and idioms Version: 3.0 Please understand the above before purchasing.