Keyhole : চাবির ছিদ্র; তালার নাই; তালাতে চাবি ঘোরানোর গর্ত;
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Appropriate Prepositions
Abide by(মেনে চলা): We must abide by the rules of discipline.
Alarm at, by, for(আশংকা করা/শঙ্কিত হওয়া): I was not alarmed at/by the news, but I was alarmed for their safety.
Bask in(রোদ পোহানো): The boys and girls are basking in the sun right now.
Fed up with (বিরক্ত): He is fed up with waiting for her.
Genius for (দক্ষতা): Nazrul had a genius for convincing girls.
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Idioms
ABC - (প্রাথমিক জ্ঞান): I don't know the ABC of politics.
Bare word (শুধু মুখের কথা, স্বাক্ষী প্রমানহীন কথা-n) He believed your bare word and now he has been played false with.
For good (চিরদিনের জন্য): He left the house for good.
Seventh heaven – (মহাখুশী) – I was in the seventh heaven when I heard the news of my BCS final result.
Short cut (সংক্ষিপ্ত পথ)— He comes by this shortcut.