Share Print Select the links below to download the complete audio for Proficiency Masterclass Student’s Book (‘Audio CD 1’ and ‘Audio CD 2’), audio scripts for all the listening exercises in the Student’s Book, and an answer key for all the exercises in the Student’s Book. We hope you enjoy using Proficiency Masterclass. Answer key PDF (55 KB) Audio CD 2 ZIP (7 MB) Audio CD 1 ZIP (38 MB) Audio scripts PDF (122 KB)