১৪০ দিনে ৫১তম বিসিএস প্রস্তুতি১টি পরীক্ষায় এসেছেপ্রশ্ন ৬৩He helps his friend when he is in danger. (Make it Simple)কক) He helps his friend in time of danger.খখ) He helps his friend if he is in danger.গগ) He helps his friend to be in danger.ঘঘ) He helps his friend while he is in danger.উত্তর দেখুন