Hello dear Webmates. I've been asked to teach some adult language learners who are going to sit the IELTS exam next year the four language skills (Listening, Speaking, Reading, and Writing). I was wondering if you could recommend some books for the beginner levels, since they're really beginners! So, I think I can't use the Cambridge practice tests. I've been recommended some books like The English result series, True to Life series, Face2face series, and Headway series. Do you have any experience regarding teaching or studying for IELTS? What do you suggest? I'd appreciate your advice. Thank you.