Long standing : দীর্ঘকালস্থায়ী;
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Appropriate Prepositions
Adapt for (উপযোগী করে নেওয়া): This book has been adapted for the children.
Behave towards(ব্যবহার করা): The students behaved objectionably towards the Head teacher.
Hostile to (বিরোধী বা বিরূপ ভাবাপন্ন): Nobody is hostile to you.
Indebted to (ঋণী থাকা): We are indebted to the great leaders of the country for their service.
Run on (বিরতিহীন চলা): The bus is running on time.
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Idioms
As a rule (নিয়ম অনুসারে.) As a rule, she kept silent in the meeting.
For good (চিরদিনের জন্য): He left the house for good.
Now and then (মাঝে মাঝে): He comes here now and then.
Slip of the pen (লেখায় অসতর্কতাবশত সামান্য ভুল): The mistake is due to a slip of the pen.
Square meal (পেট ভরা আহার): He is too poor to have a square meal everyday.