ফ্রি সাপ্তাহিক মডেল টেস্ট১টি পরীক্ষায় এসেছেপ্রশ্ন ৪০In which of the following sentences the word 'Down' is used as a preposition?কThe Titanic went down on her first voyage. খHe has seen the ups and downs of life. গA huge rock came rushing down the hill. ঘThe porter was killed by the down train. উত্তর দেখুন