Quadrangular : চতুর্ভুজাকার;
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Appropriate Prepositions
Agree to(ব্যক্তি ছাড়া অন্যকিছুর সাথে একমত হওয়া): We cannot agree to your proposal.
Careless of(অসতর্ক): Do not be careless of your health.
Devoid of (বিহীন/বর্জিত): He is devoid of common sense.
Enter into (আলোচনা করতে আরম্ভ করা): Let’s not enter into details at this stage.
Match for (প্রতিদ্বন্দ্বী): He is no match for me.
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Idioms
Dead of night (মধ্যরাত্রি): The robbers broke into the house at dead of night.
Fight shy (এড়িয়ে চলা): Why do you fight shy of your teacher?
Lion’s share (বড় মাপের অংশ): He took the lion’s share of the profit.
Through and through (পুঙ্খানুপুঙ্খু রুপে)- He read the poem through and through.
Well off (স্বচ্ছল) - Jim and Della were not well off.