She has written a letter.
Choose the correct passive form:

• Correct Answer: ক) A letter has been written by her.

- মূল বাক্যটি হলো: "She has written a letter."
- এটি একটি Present Perfect Tense– যার গঠন: Subject + has/have + past participle (V3).
- Passive voice-এ গঠন হবে: Object + has/have been + V3 + by + Subject.
- এখানে "a letter" হলো object, আর "has been written" সঠিক passive structure।
- তাই, সঠিক উত্তর হলো: "A letter has been written by her."

Other options:
খ) A letter is written by her. → এটি Present Indefinite tense-এর passive, ভুল হয়েছে।

গ) A letter was written by her. → এটি Past Indefinite tense, তাই ভুল।

ঘ) A letter had been written by her. → এটি Past Perfect tense-এর passive, তাই ভুল।

Source: A Passage to the English Language, S.M. Zakir Hussain.