শিক্ষক নিবন্ধন (NTRCA) প্রস্তুতি [১৯তম]১টি পরীক্ষায় এসেছেপ্রশ্ন ৫As soon as I heard the bell, I opened the door. (Make it Negative)কNo sooner had I heard the bell, I opened the door.খNo sooner had I heard the bell than I open the door.গNo sooner had I hear the bell than I opened the door.ঘNo sooner had I heard the bell than I opened the door.উত্তর দেখুন