Wortino

erstrecken: haben or sein? Perfect tense: hat erstreckt

In English: to extend, to stretch (sich erstrecken) · B1

The answer

In the Perfekt, erstrecken takes: haben

Perfekt auxiliary
haben
Partizip II
erstreckt
Perfekt
hat erstreckt

Wortino stores one auxiliary per verb; some verbs can take both depending on the meaning.

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