Effectiveness : কার্যকারিতা;
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Appropriate Prepositions
Attain to (লাভ করা): He will not attain to his objective so soon.
Good for, at (ভাল): This man is good for nothing. He is good at English.
Noted for (বিখ্যাত): She is noted for dancing.
Run after (পশ্চাদানুসরণ করা): Do not run after money.
Run into (জড়িয়ে পড়া): He had run into debt.
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Idioms
Laughing stock (হাসির পাত্র)— He is a laughing stock to all.
Pass sth/sb off as sth/sb (মিথ্যা পরিচয় দেয়া; Pretend – ভান করা): They were trying to pass off these shirts as genuine Armani.
Riding for a fall (বেপরোয়াভাবে কাজ করা- to act recklessly): He rides for a fall in the election.
To the contrary (against what some one had said, পক্ষান্তরে) —He said nothing to the contrary.
Up-to-date (আধুনিক) - Now-a-days ladies are very up to date.