Binary operation : দ্বিপদ প্রক্রিয়া;
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Appropriate Prepositions
Abhorrence of (ঘৃণা): Everyone should have abhorrence of a par.
Absent from(অনুপস্থিত থাকা): I was absent from the class yesterday.
Aim at(আঘাত করার জন্য লক্ষ্য স্থির করা): The hunter aimed at the tiger.
Care of(যত্ন নেওয়া): You should take care of your health.
Guard from/against (রক্ষা করা): My parents always guard me from/against bad people.
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Idioms
Learn by heart (মুখস্থ করা)— He learnt the poem by heart.
Lose heart (হতাশ হওয়া) — Do not lose heart in danger.
Pack of lies (ডাঁহা মিথ্যা)—He told pack of lies to prove himself innocent.
Soft Soap (নিজ অভিপ্রায়ে/অভিসন্ধিতে তোষামোদ করা): He was expert in soft soap.
White elephant (অত্যন্ত ব্যয়সাপেক্ষ বিলাসিতা): At last the department proved to be a white elephant.