Question

Convert it into passive voice where do you teach him

Answer 1

At which place he is taught by you ?

I think this should be the answer...

Answer 2

Active Voice is where, a subject performs an action or does an object

Passive voice is where, an action is being performed by the subject

$\red{Example}$

She waters the plants ( $\textbf{Active\:Voice}$ )

The plants are being watered by her ( $\textbf{Passive\:Voice}$ )

GIVEN STATEMENT

Where do you teach him? (Active voice)

Where is he being taught by you? (Passive Voice)