Substandard : নিকৃষ্ট মানের; স্বাভাবিক মান অপেক্ষা হীনতর;
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Appropriate Prepositions
Bridge over (সেতু): The only entrance to Allahabad in that direction was by a bridge over the Jumna.
Consist in (কোনো কিছু মধ্য বিদ্যমান থাকা): Happiness consists in contentment.
Consolidate for (শক্তিশালী করা): The four new companies consolidated for greater efficiency.
Defend against (রক্ষা করা): We will defend our country against all enemies.
Quarrel with (ঝগড়া করা): Some girls quarreled with one another.
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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.
As ill-luck would have it (unfortunately- দুর্ভাগ্যবশত) A child was born to them but, as ill-luck would have it, it died when it was eight days old.
To play on a fiddle (অনর্থক সময় নষ্ট করা - To waste time)-He played on a fiddle by nature.
Red tape (official formalities, অফিসের কাজ)— You would not believe the red tape involved in getting the required permits.
Sheet anchor (শেষ আশ্রয়; প্রধান অবলম্বন; আসল খুঁটি)— This small piece of land is his sheet anchor.