Unquestionable : সন্দেহাতীত; প্রশ্নাতীত;
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Appropriate Prepositions
Absent from(অনুপস্থিত থাকা): I was absent from the class yesterday.
Breakdown of (বিস্তারিত): Here is statistical breakdown of data.
Contribution to (অবদান): His invention made a major contribution to road safety.
Delighted at/with (আনন্দিত হওয়া): Sharmin was delighted at/with her husband’s promotion.
Fond of (প্রিয়/অনুরাগী): Children are fond of sweets.
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Idioms
Flesh and blood (রক্তমাংসের শরীর): She's my own flesh and blood; I can't believe she treated me that way!
Slow coach (অলস): You cannot expect much from a slow coach.
Seventh heaven – (মহাখুশী) – I was in the seventh heaven when I heard the news of my BCS final result.
Sheet anchor (শেষ আশ্রয়; প্রধান অবলম্বন; আসল খুঁটি)— This small piece of land is his sheet anchor.
Up-to-date (আধুনিক) - Now-a-days ladies are very up to date.