Change the following from active to passive: The agent could have sold the house.
The house could have been sold by the agent.
The active form uses the modal perfect "could have sold" (modal + have + past participle).
The corresponding passive structure is modal + have + been + past participle — i.e. could have been sold.
The object of the active sentence ("the house") becomes the subject of the passive, and the original subject ("the agent") is introduced with by:
"The house could have been sold by the agent."
Options (B), (C) and (D) all break the modal-perfect passive form ("could be sold" drops the perfect aspect; "could have sold" stays active; "could had been" mixes tenses ungrammatically).
Hence the correct answer is (A).
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Important Questions from Active and Passive Voice
Directions: Select the correct passive form of the given sentence.
The coach received the members of the team with great excitement.
Select the correct passive form of the given sentence.
They are laying new telephone cables in our colony.
Select the correct passive form of the given sentence.
Dr. Verma advised patients to try out a new medicine for migraine.
Choose the correct passive construction of the sentence:
Rosy paints beautiful landscapes.
Direction: Select the correct passive form of the given sentence.
Who has taken away my pen?
