Cluster sampling : গুচ্ছের আদর্শ;
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Appropriate Prepositions
Add to (বৃদ্ধি করা, যোগ করা): The doll-dance in the exhibition added to our pleasure.
Annoyed with(ব্যক্তির সাথে বিরক্ত হওয়া): I am annoyed with him.
Averse to (বিমুখ): Rahim was averse of your various problems.
Based on(প্রতিষ্ঠিত, ভিত্তিক): His information is not based on the correct information.
Perfect for (সঠিক, মানানসই): The new book is perfect for you.
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Idioms
Bare word (শুধু মুখের কথা, স্বাক্ষী প্রমানহীন কথা-n) He believed your bare word and now he has been played false with.
Kith and kin (নিকট আত্মীয়): He has no relation with his kith and kin.
Set free (মুক্ত করা): The prisoners were set free.
Well-to-do (সঙ্গতিপূর্ণ) - He was not born in a well-to-do family.
Yellow dog (হীন ব্যক্তি) - A yellow dog is always hated by all.