MyGrammarLabteaches and practises grammar through a unique blend of book, online and mobile resources – offering every learner of English the opportunity to study grammar in the way that best suits their needs. CD 1 Pronunciation. Listen to explanations about the pronunciation of grammar and vocabulary items. Look in the book for this reference: Pronunciation. CD 2,3,4 Listen and check. Listen to the practice exercises from the book to check the answers. Look in the book for this reference: Listen and check.