Pertinacity : জেদ,দৃঢ়প্রতিজ্ঞা;
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Appropriate Prepositions
At lunch (দুপুরের খাবারে): They were talking so much at lunch that their food went cold.
Authority over (কর্তৃত্ব, আধিপত্য): She has no authority over his growing daughters.
Die of, for, from (মারা যাওয়া): He died of cholera. He died for his country. He died from an injury.
Drop to (নিচে নামানো): Asif dropped his voice to a whisper.
Look for (খোঁজা): I was looking for the lost phone.
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Idioms
At liberty (free-মুক্ত-adj.) They are at liberty to go anywhere.
Bad names (গালমন্দ—n) He called the man bad names.
Fair and square (সৎ): The learned persons should be fair and square.
Nip in the bud (অঙ্কুরে বিনষ্ট হওয়া): All his hopes were nipped in the bud.
Pass sth/sb off as sth/sb (মিথ্যা পরিচয় দেয়া; Pretend – ভান করা): They were trying to pass off these shirts as genuine Armani.