''Her new cell phone wants to be sold by Nthabseng.'' is the passive voice sentence of ''Nthabiseng wants her new cell phone sales.'' For changing an active voice sentence into a passive voice sentence, we have to move the object of the active sentence into the subject of the passive sentence, then we use the verb “to be” in the same tense and in the last, use the past participle or second form of verb of the main verb of the active sentence.
