One can read about them anywhere, be it internet or many books printed for the preparation but it is highly recommended that you join a good institute like Abroad Gateway which is the Best IELTS Coaching Centre in Chandigarh so that you can understand it better and have no doubts about them, for example; you get 10 minutes at the end of the listening test to transfer the answers on the answer sheet, that is why it is important that you focus completely on the recording when it is getting played.

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