Pollock Carroll Washington, Eckstut Samuela. Communicate what you mean

White Plains, NY: Longman/Pearson Education, 2000. — 311 p.Now in its second edition, this book helps English learners gain an excellent foundation in English grammar through numerous exercises and discussion topics. Uses discussion topics such as pollution, politics, and cultural differences to present grammar structures and oral and written exercises. For advanced ESL learners.
A rich grammar resource for Intermediate and above. Handy both for teachers and learners. (Comes with the answer key)