ব্যাংক মডেল টেস্ট [সাপ্তাহিক]১৮টি পরীক্ষায় এসেছেপ্রশ্ন ২২Which of the following sentences is correct? ক Each of the students brought his or her textbook.খ Each of the students brought their textbook.গ Each of the students brought one's textbook.ঘ Each of the students brought their's textbook.উত্তর দেখুন