"They are cleaning the room." (Make it passive)

The correct passive form of the sentence "They are cleaning the room''. is: The room is being cleaned by them.

• Present Continuous Tense এর  Active voice থেকে Passive voice এ রূপান্তরের নিয়ম:
- Subject +
- (is /am / are) +
- being +
- Verb in past participle +
- Others. 

- নিয়মানুযায়ী সঠিক উত্তর - The room is being cleaned by them.

Source: A Passage to the English Language, S.M. Zakir Hussain, Website English Wizard, Saleh Ahmed, Advanced Learner's English Grammar & Composition.