The glass must have been broken by Nusrat. (Make it active)

• Passive structure যদি Subject + Modal auxiliary + have been + v3 + by + object হয় তাহলে active form হবে - 
- প্রথমে শেষের object subject রূপে বসবে।
- এরপর Modal auxiliary
- have
- verb এর past participle form
- object.
অতএব, প্রদত্ত বাক্যটির active form: Nusrat must have broken the glass.