Null and void : অকার্যকর; বাতিল; খারিজ; বৈশিষ্ট্যহীন; আইনত কার্যকর নয়;
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Appropriate Prepositions
Apathy towards (অনাগ্রহ): The student has great apathy towards his studies.
Covetous of(লোভী হওয়া): He is covetous of wealth.
Guilty of (অপরাধী/দোষী): The convict was guilty of murder.
Perfect for (সঠিক, মানানসই): The new book is perfect for you.
Short of (অপর্যাপ্ত): I am running short of money.
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Idioms
Breathe one’s last (decease, die- শেষ নিঃশেষ ত্যাগ করা, মরে যাওয়া) The man breathed his last in his native village.
Eat humble pie (অপমান হজম করে ক্ষমা চাওয়া): The manager had to eat humble pie before his employees.
Put the cart before the horse (to reverse the natural order of things-কোনো জিনিসের স্বাভাবিক ক্রমকে পাল্টে দেয়া) - The leader put the cart before the horse.
Silver living (hope- আশা বা ভালো দিক): Every cloud has a silver lining.
With the sweat of one’s brow (মাথার ঘাম পায়ে ফেলে) — He earns his livelihood with the sweat of his brow.