`I am writing a letter` –বাক্যটির সঠিক পরিবর্তিত voice হবে-
A letter is written by me.
A letter was written by me.
A letter being written by me.
A letter is being written by me.
Correct
Explanation:
Correct Answer is: A letter is being written by me.
Active voice-টি present continuous tense এ আছে। একে করার নিয়ম হলো object কে subject + auxiliary verb + being + মূল verb-এর Past Participle + by + subject কে object.