Cluster sampling : গুচ্ছের আদর্শ;
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Appropriate Prepositions
Adapt for (উপযোগী করে নেওয়া): This book has been adapted for the children.
Adjacent to(সংলগ্ন): The Post Office is adjacent to my house.
Control over(নিয়ন্ত্রণ): He has no control over his sons.
Dressed in (সজ্জিত, পরিহিত): The girl was dressed in silk.
Stare at (চাওয়া বা তাকানো): He stares at me.
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Idioms
For good (চিরদিনের জন্য): He left the house for good.
In no time (শীঘ্র): He will finish the work in no time.
Pick a quarrel (ঝগড়া করা)—Do not pick a quarrel.
Soft Soap (নিজ অভিপ্রায়ে/অভিসন্ধিতে তোষামোদ করা): He was expert in soft soap.
Turn a deaf ear to (pay no attention, প্রত্যাখান করা) —He turned a deaf ear to my proposal.