New American Streamline Departures - Beginner: An Intensive American English Series for Beginners: Departures Workbook B (Units 41-80): B

New American Streamline combines natural language, everyday situations, and extensive practice of all four skills to give students a practical command of simple, spoken English.
Each of the three levels (Departures, Connections, and Destinations) can be used as independently or as a series.