Business English Study - Elementary 4 - looks Oil and Gas: Saudi Aramco, BP, ExxonMobil, PetroChina, and Gazprom. Each module contains: Business Skills, Grammar point, Listening practice, Reading exercise, Vocabulary building, Pronunciation, and Role-plays. Business English Study produces a variety of books that are an excellent resource for Business English Tutors who want to inspire their students, and offer career opportunities.