Incorporating career-specific vocabulary and contexts, each unit offers step-by-step instruction that immerses students in four language components: reading, listening, speaking and writing. Career Paths: Travel Agent addresses topics including types oftravel, ticket information, lodging, cancellations, and international travel.The series is organized into three levels of difficulty and offers over 400 vocabulary terms and phrases. Every unit includes a test of reading comprehension, vocabulary, and listening skills, and leads students through written and oral production.