This is a test format problem collection. There are no markings on the questions themselves, but there are many markings on the explanation pages. Please be aware of this. The CD is unused and unopened. Since it was used in a university lecture, the notes are a benefit and can be used to improve your score. After the lecture, I improved my score from 520 to 875. - Official TOEIC Listening & Reading Practice Volume 6 - Contents: Includes 2 tests (400 questions total) - Accessories: Audio CD included