Question

Where were you? Chane in active voice.I want to answer in one sentence?

Answer 1

The subject of a sentence using the passive voice is the direct object of the one that uses the active voice.

Sadly, any sentence without a direct object, and especially one whose main and only verb is intransitive (and thus could never take a direct object), is not a candidate for the vaulted honor of being converted from active to passive voice.

Thus there is no sensible answer to your question.