Re: Looking for a Coursebook in Advanced AmE (C2)
As a speaker and teacher of BrE, I can't help with your main request I am afraid.
I'll just pass on a personal, and most probably biased, opinion of the works of 'Dear Leo', as he is not very affectionately referred to by my colleagues and me. If your sole aim is to pass Cambridge examinations, then Dear Leo may help. If you wish to use English naturally, then look elsewhere.
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