৪০ দিনে ৪৭তম বিসিএস প্রস্তুতি - Archived৩টি পরীক্ষায় এসেছেপ্রশ্ন ৬২In which sentence is the word 'since' used as a preposition?কক) It has been a long time since we last met.খখ) I have not seen him since.গগ) I have fallen in love since I saw her.ঘঘ) He has been ill since Sunday last.উত্তর দেখুন