Professional English in Use Management with Answers

This book is useful if you targeting only management English and its level is high intermediate. As an ESL teacher for business executives, I am always loooking for good vocabulary books for business but most of my students need a broader spectrum book which this is not. Also a little lower level would be better as many business professionals do not come to the US at a high intermediate level. I use it as a resource book but not as a primary book for student use.