Close the business textbooks and have interesting and relevant discussions. Engaging business-oriented topics and questions allow students to put their vocabulary and grammar skills to practical use and build English speaking confidence. You might consider using just the cards as an activity in a business class.
Example discussion points and questions
Emailing is important in modern business. What problems can people have when communicating by email? Can you suggest some solutions to these problems? Social media sites such as Facebook and Instagram should be blocked at work. Do you agree or disagree?