Problematic : অনিশ্চিত; সন্দেহযুক্ত;
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Appropriate Prepositions
Authority on(বিশেষজ্ঞ পন্ডিত): Kamal was an authority on English literature.
Delegate to (প্রতিনিধি): Nazrul welcomed the delegates to the new conference.
Faith in (বিশ্বাস): I have no faith in him.
Famous for (বিখ্যাত): Smith is famous for his wisdom.
Play on (বাজানো): They play on the piano.
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Idioms
Arm in arm (পরস্পর সম্পর্কিত বিষয়) All good people should live arm in arm with one another.
Fair play (প্রতারণা বিহীন নীতি বা কাজ): I believe in the practice of fair play in my business.
For good (চিরদিনের জন্য): He left the house for good.
Pave the way (সুপ্রসন্ন করা) – I am sure I can pave the way for your success.
Short temper (রগচটা)— He is a man of short temper.