Quadrangular : চতুর্ভুজাকার;
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Appropriate Prepositions
Aware of(অবগত): I am not aware of his dishonesty.
Curse for (অভিশাপ দেয়া): If he ever mistreats my parents, I will certainly curse him for it.
Dwell upon (আলোচনা করা): They dwell long upon the matter.
Fed up with (বিরক্ত): He is fed up with waiting for her.
Object to (আপত্তি করা): He objected to my proposal.
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Idioms
Fish in a troubled water (এলোমেলো অবস্থার সুযোগ নেয়া): He made a lot of money by fishing in a troubled water.
In the long run (পরিণামে): You will have to suffer in the long run.
Ups and downs (উত্থান পতন): There are ups and downs in a man’s life.
Upper hand (প্রাধান্য) - He got the upper hand in the selection.
Well up (সুপন্ডিত)- Dr. Shahidullah was well-up in Bengali language.