At one time : একদা; এককালে; একবার;
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Appropriate Prepositions
Apologize to (ক্ষমা প্রার্থনা করা, দুঃখসহ ত্রুটি স্বীকার করা): The student apologized to the Principal for adopting unfair means in the examination.
Appoint to(নিযুক্ত করা/হওয়া): Kibria has been appointed to the post of Headmaster.
Complain about (কোনো বিষয়ে নালিশ করা): They complained about the mismanagement of the programme.
Inferior to (নীচু/হীন): He is inferior to his neighbor.
Married to (বিবাহিত): Salma was married to a Govt. Officer.
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Idioms
Bad bargain (purchasing at a high price-বেশি দামে কেনা-n) You had a bad bargain of the watch I see.
Crocodile tears (মায়াকান্না): He shed crocodile tears at our misery.
In one’s teens (তের থেকে উনিশ বছর বয়সের মাঝে): She is yet in her teens.
To the utmost (যথাসাধ্য) - I tried to the utmost of my ability to have a job.
Weal and woe (joy and sorrow, সুখ দঃখ) —Human life is full of weal and woe.