<a href="https://open.books4languages.com/english-a1-grammar/chapter/wh-questions/">Wh- questions</a> always begin with one of the wh- question words (interrogative pronouns), which&nbsp;show what kind of information is wanted {see <a href="https://open.books4languages.com/english-a1-grammar/chapter/wh-questions/">Wh- Questions</a>, A1 Level}.
The pronoun who is used to ask about the subject of the action.
<a href="https://open.books4languages.com/english-a2-grammar/chapter/wh-questions-words-who/">https://open.books4languages.com/english-a2-grammar/chapter/wh-questions-words-who/</a>

Wh- Questions in Past form

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