Sharpness : তীক্ষ্ণতা; প্রাখর্য;
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Appropriate Prepositions
Absent from(অনুপস্থিত থাকা): I was absent from the class yesterday.
Caution against(সাবধান): Take all cautions against the danger.
Conform to (নিয়মনীতি অনুসরণ করা): The employees have to conform to a strict dress code.
Die of, for, from (মারা যাওয়া): He died of cholera. He died for his country. He died from an injury.
Yield to (নতি স্বীকার করা): I shall not yield to his temptation.
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Idioms
After all - (সব কথার পরেও): I rang and told her I couldn't come after all.
End in smoke (ব্যর্থ হওয়া): All his plans ended in smoke.
Pick a quarrel (ঝগড়া করা)—Do not pick a quarrel.
Slow coach (অলস): You cannot expect much from a slow coach.
Ups and downs (উত্থান পতন): There are ups and downs in a man’s life.