time is not specified: I have never been to the USA., They have just woken up., Have you had breakfast yet?, Has she ever attended a festival?, time is specified: We were in the USA in 1999., My daughters woke up two hours ago., I had breakfast 15 minutes ago., She was at the festival last Friday.,
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EF_PreInt_unit 4B_grammar_PrPerf vs PS
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Veralambrekht
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Fashion and Shopping
Present Perfect vs Past Simple
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