Wortino

überwachen: haben or sein? Perfect tense: hat überwacht

In English: to monitor, to supervise · B1

The answer

In the Perfekt, überwachen takes: haben

Perfekt auxiliary
haben
Partizip II
überwacht
Perfekt
hat überwacht

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

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