Wheels within wheels : অতি জটিল যন্ত্রবিন্যাস;
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Appropriate Prepositions
Acceptable to(গ্রহণযোগ্য): Such behavior is just not acceptable in this school.
Answer for(কোনো কারনে জবাবদিহি করা): He will have to answer for his misdeeds.
Count upon(নির্ভর করা): He always counts upon your help for this work.
Quarrel with (ঝগড়া করা): Some girls quarreled with one another.
Stick to (দৃঢ়ভাবে লেগে থাকা): We should always stick to our decisions.
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Idioms
All along - (সব সময়): I was present in the meeting all along.
Bear hard upon (behave rudely-নির্দয়ভাবে ব্যবহার করা - V) Never bear hard upon your servants.
Gala day (বিশেষ দিন): The Eid–Ul-Fitr is a gala day for Muslims.
Laughing stock (হাসির পাত্র)— He is a laughing stock to all.
Set something right (ঠিক করা)— He will set the machine right.