৪৫ দিনে ৫০তম বিসিএস প্রস্তুতি [বিষয়ভিত্তিক] - Archived১৬টি পরীক্ষায় এসেছেপ্রশ্ন ২৯Identify the correct one.কThe number of students in the classroom have been increased this year.খThe number of students in the classroom have increased this year.গThe number of students in the classroom has increased this year.ঘThe number of student in the classroom has increased this year.উত্তর দেখুন