Immutability : অপরিবর্তনীয়তা; অপরিবর্ত্নশীলতা; নিত্যতা; অবিকার্যতা; বিকারহীনতা; অপরিবর্তনীয়তা;
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Appropriate Prepositions
Assure of(আশ্বাস দেওয়া): I can assure you of the Principal’s honesty.
Devoted to (মনোযোগী): He is devoted to music.
Lost in (মগ্ন): Simon is lost in meditation.
Plead for (ওকালতি করা): He pleads for justice.
Road to (উপায়/ রাস্তা): There is no easy road to learning.
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Idioms
Acid test (অগ্নি পরীক্ষা): You must succeed in the acid test of the time you live in.45
Bad book (disfavour-খারাপ নজর —n) The secretary has fallen in the bad book of the manager.
Eat humble pie (অপমান হজম করে ক্ষমা চাওয়া): The manager had to eat humble pie before his employees.
Lose one’s heart (প্রেমে পড়া) — He lost his heart to the girl.
To the utmost (যথাসাধ্য) - I tried to the utmost of my ability to have a job.