১৪০ দিনে ৫১তম বিসিএস প্রস্তুতি১টি পরীক্ষায় এসেছেপ্রশ্ন ২০In 1492, Christopher Columbus discovered the Americas. (Make it complex)কIt was in the year 1492 since Christopher Columbus discovered the Americas.খWhen it was 1492, Christopher Columbus discovered the Americas.গIt was in the year 1492 Christopher Columbus discovered the Americas.ঘSince it was in the year 1492 since Christopher Columbus discovered the Americas.উত্তর দেখুন