নতুনদের বিসিএস প্রস্তুতি - ২০০ দিনে পুরো সিলেবাস৪১৯টি পরীক্ষায় এসেছেপ্রশ্ন ৩৪Choose the correct sentence.কMany people died of a cholera in the past before vaccines were available.খMany people died of an cholera in the past before vaccines were available.গMany people died of the cholera in the past before vaccines were available.ঘMany people died of cholera in the past before vaccines were available.উত্তর দেখুন