Unchangeability : অপরিবর্তনীয়তা;
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Appropriate Prepositions
Adjacent to(সংলগ্ন): The Post Office is adjacent to my house.
Aware of(অবগত): I am not aware of his dishonesty.
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.
Heir of (উত্তরাধিকারী): He is the heir of his father.
Thirst for (তৃষ্ণা, আকাঙ্ক্ষা): A wise man has no thirst for wealth.
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Idioms
Dead of night (মধ্যরাত্রি): The robbers broke into the house at dead of night.
Pick a quarrel (ঝগড়া করা)—Do not pick a quarrel.
Slip of the tongue (বলায় সামান্য ভুল): This is a slip of the tongue; don’t pay much stress on it.
Through and through (পুঙ্খানুপুঙ্খু রুপে)- He read the poem through and through.
Ups and downs (উত্থান পতন): There are ups and downs in a man’s life.