If you find the IELTS Writing Tasks difficult (or if it is important for you to get a high score in that section), then a good book to study is Grammar for IELTS.
This text focuses on the particular formal and academic grammar structures that you should master to get a high score on the test (and to succeed at an English-speaking university).
Listening activities introduce the grammar points, so listening skills develop while you study. A wide range of tasks from the Academic and General Training Reading and Writing papers, plus the Listening paper, provide plenty of test practice. Work through the units or focus on areas that need more practice. The answer key includes tape scripts and model writing answers. The book comes with a CD containing all the listening material.
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