4 BOOK:IELTS 19 Academic & General Training+IELTS 20 Academic & General Training
You will find that the textbook is clear, yet it feels approachable, making daily practice simpler, and the pages are sturdy.
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COMBO- IELTS 20 Academic + IELTS 20 General Training by Cambridge
What stands out about this textbook is the way it balances examples with exercises, so you can test yourself straight away.