Auto-collimation : স্বতোক্ষীভবন;
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Appropriate Prepositions
Adorn with(সাজানো/সজ্জিত করা): Adorn the car with flowers.
Appoint to(নিযুক্ত করা/হওয়া): Kibria has been appointed to the post of Headmaster.
Cruise to (জয় লাভ করা): The Bangladesh team cruised to their fifth successive win this afternoon.
Inquire into (খতিয়ে দেখা): The police officer will inquire into the matter.
Quarrel with (ঝগড়া করা): Some girls quarreled with one another.
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Idioms
All at once - (হঠাৎ): I feel terribly sleepy all at once.
At one’s elbow (near at hand — হাতের কাছে – adv.) His private secretary is always at his elbow.
Swan-song (অন্তিম গীত, শেষ কর্ম): This writing is the swan song of Kazi Nazrul islam.
Ups and downs (উত্থান পতন): There are ups and downs in a man’s life.
Up and doing (উদ্যোগী): Be up and doing and then you will succeed in your life.