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I also suggest the book " Gramática átiva 1", in which you can find grammar rules and more exercises. https://www.amazon.it/Gram%C3%A0tica-activa-1-en-portugais/dp/9727576389/ref=mp_s_a_1_1?keywords=gramatica+ativa+1&qid=1582169183&sprefix=gramatica+ativa&sr=8-1


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