* VOCABULARY IN USE series is appropriate for classroom use and for \r\n self-study reference and practice. \r\n* One hundred units cover approximately 2,500 new vocabulary items at \r\n intermediate level and 3,500 at upper-intermediate level.\r\n* Promotes good learning habits and teaches students how to discover rules\r\n for using vocabulary correctly.\r\n* A complete answer key is included along with an index with phonetic \r\n transcriptions.anied by fluency activities and \r\n offer a variety of approaches to vocabulary development.through improvisations around the business themes.