The (available via download or CD) is crucial. It covers the listening sections of the exercises. The speakers use natural British/Australian accents at realistic IELTS speeds.
This book won't teach you how to pass the exam overnight, but it is arguably the best resource for fixing the specific grammar errors that lower your IELTS score. If you know your grammar is shaky, buy this. If you are already strong on grammar (Band 8+), skip it and focus on past papers. cambridge grammar for ielts with answers audio
Buy it. Use it with a pencil (so you can erase and redo the exercises). And most importantly, – don't just read the book. Do that, and your grammar will genuinely improve for the real exam. The (available via download or CD) is crucial
However, I found the "Exam tips" boxes a bit repetitive. Also, the answer key is at the very back – annoying to flip to, but that’s standard for workbooks. This book won't teach you how to pass