Question

they will only sell superior goods in the market active voice to passive voice

Answer 1

$\huge\red{\tt{\underline {Required\:Answer\::}}}$

Superior goods will only be sold in the market by them.

Extra Information ↴

(1) The object in the active voice becomes the subject in the passive voice.

(2) The subject in the active voice becomes the object in the passive voice. It is generally preceded by the preposition 'by'.

(3) The main verb of the sentence is changed into its past participle form, and it is preceded by the correct form of the 'be' verb in the passive voice.

(4) The passive voice form in the simple future tense is made by putting shall /will + be before the past participle form of the main verb.

___________________________________

Answer 2

In passive voice :

Superior goods will only be sold in the market by them.