Whereby : যদ্দ্বারা; তদ্দ্বারা; সাহায্যে; কিসে;
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Appropriate Prepositions
Appetite for(ক্ষুধা): He has no appetite for food.
Call in(ডাকিয়া আনা): They called in a doctor.
Care for(গ্রাহ্য করা): I do not care for you.
Identical with (একই ধরণের): You are identical with your sister.
Quarrel over (কোন বিষয়ে ঝগড়া করা): Do not quarrel over this trifling matter, let it be drop.
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Idioms
At a round rate (at the fixed price – নির্ধারিত মূল্যে) Things are selling in the shop at a round rate.
At a low ebb (in an unfavorable situation প্রতিকুল অবস্থায়, ভাটির মুখে) The popularity of this singer is now at a low ebb.
On the contrary (বিপরীত পক্ষে): I do not hate him; on the contrary I love him.
Speed money (ঘুষ; উৎকোচ): He hankers after speed money.
Up-to-date (আধুনিক) - Now-a-days ladies are very up to date.