Random sampling : যদৃচ্ছা নমুনা সংগ্রহ;
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Appropriate Prepositions
Bask in(রোদ পোহানো): The boys and girls are basking in the sun right now.
Careless of(অসতর্ক): Do not be careless of your health.
Competent for(যোগ্য): He is not competent for the post.
Comply with(মেনে নেওয়া): The clerks must comply with the orders of their officer.
Deprived of (বঞ্চিত): He was deprived of education due to extreme poverty.
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Idioms
Call in question (সন্দেহ করা): No one can call his honesty in question.
Get rid of (মুক্তি পাওয়া): Try to get rid of the rogue.
Lump sum (এক কালীন) — He gave us lump sum money.
Out of order (বিকল): The elevator was out of order.
Put the cart before the horse (to reverse the natural order of things-কোনো জিনিসের স্বাভাবিক ক্রমকে পাল্টে দেয়া) - The leader put the cart before the horse.