Working efficiency : কার্যক্ষমতা;
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Appropriate Prepositions
Anxious for (কারোর ব্যাপারে চিন্তিত): Sabbir was anxious for her.
Damage to (ক্ষতি): The flood caused much damage to crops last year.
Make up of (গঠিত): Village is made up of many homes.
Recover from (সুস্থ হওয়া; পূর্ব অবস্থায় ফিরে আসা): The patient has not yet recovered from his severe illness.
Regard for (সম্মান): Good boys have great regard for their teachers.
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Idioms
Brown study (day dream-দিবাস্বপ্ন -n) The woman is absorbed in a brown study.
Die in harness (কর্মরত অবস্থায় মারা যাওয়া): Dr. Sen died in harness.
Foul play (অসদাচারণ করা): We feared that he had met with foul play.
Pack up a quarrel (ঝগড়া মিটানো)— He packed up their quarrel.
Square meal (পেট ভরা আহার): He is too poor to have a square meal everyday.