Nullify : রদ করা, নিষ্ফল করা
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Appropriate Prepositions
Convert to(দীক্ষিত): Tom is converted to another religion.
Destitute of (নিঃস্ব; বিবর্জিত): He is destitute of any friend here.
Due to (কারণে): His absence is due to illness.
Dull of (বধির; কানে শুনে না): He is dull of hearing.
Hinge on/upon (নির্ভর করা): The whole matter hinges upon this clue.
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Idioms
Brown study (day dream-দিবাস্বপ্ন -n) The woman is absorbed in a brown study.
On the whole (মোটের ওপর): On the whole, his conduct is good.
Rank and file (সাধারণ লোক): We should pay attention to the rank and file of the country.
Scapegoat (উদোর পিন্ডি বুধোর ঘাড়ে)—He was made scapegoat of the incident.
Sheet anchor (শেষ আশ্রয়; প্রধান অবলম্বন; আসল খুঁটি)— This small piece of land is his sheet anchor.