knacken: haben or sein? Perfect tense: hat geknackt
In English: to crack · B1
The answer
In the Perfekt, knacken takes: haben
- Perfekt auxiliary
- haben
- Partizip II
- geknackt
- Perfekt
- hat geknackt
Wortino stores one auxiliary per verb; some verbs can take both depending on the meaning.
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