Penknives : চাকু; ছুরি; ছুরিকা; কলম-কাটা ছুরি;
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Appropriate Prepositions
Antipathy to/towards (ঘৃনা): I have a strong antipathy to smoking.
Behave towards(ব্যবহার করা): The students behaved objectionably towards the Head teacher.
Busy with(ব্যস্ত থাকা): Rahim is now busy with her homework.
Change into (পরিবর্তিত হওয়া): At what point does boiling water change into vapor.
Die for (আত্নত্যাগ করা): Our Chairman died for our country.
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Idioms
Bear hard upon (behave rudely-নির্দয়ভাবে ব্যবহার করা - V) Never bear hard upon your servants.
Eat humble pie (অপমান হজম করে ক্ষমা চাওয়া): The manager had to eat humble pie before his employees.
Three score (ষাট): He is happy as his brother got three score.
Tooth and nail (strongly, প্রবলভাবে)-He fought tooth and nail against his enemy.
With the sweat of one’s brow (মাথার ঘাম পায়ে ফেলে) — He earns his livelihood with the sweat of his brow.