ব্যাংক মডেল টেস্ট [সাপ্তাহিক]১টি পরীক্ষায় এসেছেপ্রশ্ন ২৯Hardly had the students submitted their assignments when ___________________.কthe professor announced a surprise quizখthe professor did announced a surprise quizগthe professor would announced a surprise quizঘthe professor would announce a surprise quizউত্তর দেখুন