Sometimes, we caught up in learning English simply as a means for passing an important test. That's why there are so many test-based English-learning textbooks around us. Unfortunately, once the test is over, both the English textbook and crammed information are deposited in the trash.
Here are three textbooks I wrote that actually help you in the workplace, and real world, not just in the classroom: Hotel English (ISBN 978-986-6700-66-8), Tourism English (ISBN 978-986-6406-21-8) and Restaurant English (ISBN 978-986670073)