The past examination papers in Cambridge Key English Test 4 provide the most authentic exam preparation available. They allow candidates to familiarize themselves with the content and format of the examination and to practise useful examination techniques. Student's Books are available in both 'with answers' and 'without answers' editions. The Self-Study Pack contains the Student's Book with Answers and the Audio CD. Books are numbered to indicate how many are available. Numbers do not refer to levels.