What is the passive form of the sentence 'I had made breakfast'?

• প্রশ্নে উল্লেখিত বাক্যটি Past Perfect Tense এ রয়েছে।• Present Perfect Tense এর interrogative sentence কে passive voice করার জন্য structure:- Object টি subjective form + had been + মূল verb এর past participle + by + subject এর objective form.• নিয়মানুযায়ী, সঠিক passive voice টি হচ্ছে - Breakfast had been made by me.