Formy przeczące w czasie Present Perfect Continuous

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question		réponse
I commencer à apprendre		have not been (doing)
you commencer à apprendre		have not been (doing)
he/she/it commencer à apprendre		has not been (doing)
we commencer à apprendre		have not been (doing)
you commencer à apprendre		have not been (doing)
they commencer à apprendre		have not been (doing)

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