Gun cotton : বারূদ;
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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.
Creep up (বৃদ্ধি পাওয়া): The prices of are creeping up day by day.
Deal in (কোনো কিছুর ব্যবসা করা): They deal in green vegetables.
Grateful to (কৃতজ্ঞ): We should be grateful to our teachers.
Heir of (উত্তরাধিকারী): He is the heir of his father.
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Idioms
Foul play (অসদাচারণ করা): We feared that he had met with foul play.
In the long run (পরিণামে): You will have to suffer in the long run.
Pass sth/sb off as sth/sb (মিথ্যা পরিচয় দেয়া; Pretend – ভান করা): They were trying to pass off these shirts as genuine Armani.
Pick one’s pocket (পকেট মারা)— He tried to pick my pocket.
Seventh heaven – (মহাখুশী) – I was in the seventh heaven when I heard the news of my BCS final result.