Wortino

klemmen: haben or sein? Perfect tense: hat geklemmt

In English: to jam, to clamp; to tuck · B1

The answer

In the Perfekt, klemmen takes: haben

Perfekt auxiliary
haben
Partizip II
geklemmt
Perfekt
hat geklemmt

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

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