Backward class : অনুন্নত সম্প্রদায়;
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Appropriate Prepositions
Appetite for(ক্ষুধা): He has no appetite for food.
Attentive to(মনোযোগী): He is attentive to his business.
Cure of, for(রোগমুক্ত হওয়া): This man was cured of This drug is a cure for typhoid.
Deaf to, of, in (না শোনা, বধির হওয়া): The boy is deaf to his father’s advice. This man is deaf of/in one ear.
Look up (ডিকশনারি থেকে শব্দার্থ খোঁজা): He is looking up a new word meaning from dictionary.
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Idioms
At one’s elbow (near at hand — হাতের কাছে – adv.) His private secretary is always at his elbow.
Bird’s eye view - (ভাসা ভাসা দৃশ্য, হালকাভাবে দর্শন): We took a bird’s eye view of the scenery.
Die in harness (কর্মরত অবস্থায় মারা যাওয়া): Dr. Sen died in harness.
Make both ends meet (আয় ব্যয় মেলানো): I cannot make both ends meet with my small income.
Rank and file (সাধারণ লোক): We should pay attention to the rank and file of the country.