Question

Corrosion had damaged the door of the almirah change into passive voice

Answer 1

the door of the almirah had been damaged by corrosion.

Answer 2

Active voice is where the subject does the object

Passive Voice is where the object is being done by the subject

PLEASE NOTE

Habitual actions cannot be changed to passive voice.

Example

She waters the plants (Active Voice)

The plants are being watered by her (Passive Voice)

$\blue{\mathfrak{STATEMENT\:GIVEN}}$

Corrosion had damaged the door of Almirah (Active Voice)

The door of Almirah had been damaged by corrosion