For many days : কতদিন;
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Appropriate Prepositions
Ask about (কাউকে খোঁজ করা): Rahim asked about Karim.
Attacked with(আক্রান্ত): He is attacked with …
Devote to (উৎসর্গ করা/নিয়োজিত করা): Students should devote sufficient time to their studies.
Fond of (প্রিয়/অনুরাগী): Children are fond of sweets.
Object to (আপত্তি করা): He objected to my proposal.
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Idioms
Give one’s right arm (বিপদের ঝুকি নেয়া): I will give my right arm if I could manage the tickets.
Irony of fate (ভাগ্যের পরিহাস): He could not succeed by irony of fate.
Pandora’s box (আপাতঃ দৃষ্টিতে ভালো মনে হলেও আসলে ভালো নয়)—His words proved to be Pandora’s box.
Square meal (পেট ভরা আহার): He is too poor to have a square meal everyday.
Worthy of (যোগ্য) - He is worthy of a good job.