What was it you wanted
The primary auxiliary verbs do, does or did do not appear in the passive form.
No, "I want my MTV" is in the active voice. "MTV is wanted by me" uses the passive voice, but it is very awkward and not something someone would actually say. The following example shows active and passive voice in expressions that are actually used: Active voice: We made mistakes. Passive voice: Mistakes were made.
No
What do you mean, what do I mean? Did I use the expression "active and passive voice"? I don't think so. No, you want to phrase your question "What is meant by the active and passive voice?", because that way you don't have to say who is using those words. You see, normally if you say something like "B. King is discussing active and passive voices" you have to say that it is B. King that is doing it, but if you don't know or don't want to say, you can turn it around backwards so it says, "Active and passive voices are being discussed." There. You don't know from that who is discussing it, do you? Perhaps you would like to know what this turning around backwards is called? It's called the passive voice. Yes, I asked you to rephrase your question so it was in the passive voice ("What is meant by the active and passive voice?") rather than the active voice ("What do you mean by active and passive voice?").
This sentence is in passive voice. To change it to active voice, you could say "Five dollars were present."
To put that sentence in passive voice, you would say, "The joker was laughed at by them." (It's a good example of why you should most often not use the passive voice.)
"to be called" is passive, but "what do you prefer" is active. To make "to be called" active, you could say "what do you prefer that others call you?" To make "what do you prefer" passive, you would say "what is preferred by you..."
I suppose so. If you can say Most of the students flunked this test, then you might say This test was flunked by most of the students.
No, and trying to put it into passive voice would result in a very poor un-English sentence.
The passive voice of ''what do you do'' is "what is done by you?"
"Your name is not known by me." is passive voice.
Passive voice
"Will you marry me" can be changed to passive voice as "Will I be married by you." In the passive voice sentence, the subject of the active voice becomes the object of the passive voice, and the object of the active voice becomes the subject of the passive voice.