Harmonic series : বিপরীত শ্রেণী; বিপরীত শ্রেণি;
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Appropriate Prepositions
Apart from(ছাড়া, ব্যতীত, দূরে): They pave apart from each other.
Apathy towards (অনাগ্রহ): The student has great apathy towards his studies.
Appetite for(ক্ষুধা): He has no appetite for food.
Control over(নিয়ন্ত্রণ): He has no control over his sons.
Entrust with (কোনো কিছু দ্বারা কাউকে বিশ্বাস করে): He entrusted me with the thing.
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Idioms
At the latest (খুব বেশি দেরী হলে) He will arrive here at 5 p. m. at the latest.
Kith and kin (নিকট আত্মীয়): He has no relation with his kith and kin.
Stone’s throw (অতি নিকটে): Our school is at a stone’s throw from our house.
Steer clear of (avoid, দূরে থাকা)— You must steer clear of evil company.
Through thick and thin (through all difficulties, সমস্ত সমস্যার মধ্যে)-Ruma followed her husband through thick and thin.