Question

Convert ‘How do write that word?’ into passive voice Please, I really need help

Answer 1

First, is the question, "How do you write that word?" If so, you could say "How does that word get written?"

Answer 2

Passive voice refers to an action that is being done to a subject. Active voices refers to an action that the object is doing. So your converted sentence would be "How was that word written?" Since you are talking about something being done to an object.