The two volumes of the arranging materials offer occasions of the Listening, Reading, Writing and Speaking tests with test answers and master remarks. The CD in Vol. 1 offers starter of the Listening test and the DVD in Vol. 2 shows test takers wandering through the Speaking evaluation. These are the single IELTS practice materials increased in value by the IELTS partners. You can buy official IELTS test materials from Cambridge University Press (click on the relationship above), or from a The IELTs Classes.