For a long time : দীর্ঘসময়ের মধ্যে; বহুকাল ধরিয়া; কতকাল; কতদিন;
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Appropriate Prepositions
Affection for(স্নেহ): She has a great affection for the child.
Answerable to (কারো কাছে জবাবদিহিতা করা): He is not answerable to anybody for his mistake.
Avail (oneself) of(সুযোগের স্বব্যবহার করা): I shall avail myself of the first trip to London tomorrow.
Heir to (উত্তরাধিকার পাওয়া): He is an heir to a vast property.
Infested with (অতিষ্ঠ): The room is infested with rats.
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Idioms
At a low ebb (in an unfavorable situation প্রতিকুল অবস্থায়, ভাটির মুখে) The popularity of this singer is now at a low ebb.
At the eleventh hour (at the last moment-শেষ মুহুর্তে adv.) The patient was in a dangerous condition and the doctor came at the eleventh hour.
Crying need (জরুরী): Mass education is a crying need for India.
Cut a sorry figure (খারাপ ফল করা): He cuts a sorry figure in the examination.
Fall flat (ফলপ্রসূ না হওয়া): This business is going to fall flat.