"Accept the Challenge" by Subho Biswas

This is not just an English grammar book but an experience of eleven years of teaching students appearing for competitive exams. This book is ideally designed for SSC, bank, CDS, NDA, navy, airforce, REET, and school levels as well. Once you answer the book, one of your seats in the competitive exams is reserved.
This book will be followed by a second edition, which will contain topics like narration, voice, passage, close test, rearrangement, parajumble and English teaching skills for all.

You can purchase Accept the Challenge from Amazon, Flipkart, Shopclues and BlueRose.