Book with answers and eBook with audio. Perfect for anyone who wants a printed copy of the book plus the same content as an eBook for easy access anytime. Inside the book is a code for the ebook. It can be used online using a desktop or laptop computer, and also downloaded to an iPad or Android tablet.
Book with answers. The classic print version of the book, ideal for self-study.
Book without answers. The same grammar explanations and practice exercises as found in the 'book with answers' but ideal for classrooms where teachers do not want students to have immediate access to the answers.