As I told you in class, here's a collection of websites and exercises for you to practice. Feel free to add more to the list, so we can build it together:

General business vocabulary exercises
Talking business: telephone, meetings, presentations, negotiations 
BBC- World Business Review (podcasts)
Business Reading Comprehension Exercises
Listening exercises (audio and video)
Business English Exercises for Adults, Grammar and Listening Online
Harvard Business Review
Bloomberg Businessweek