Confidential letter : গোপনীয় পত্র;
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Appropriate Prepositions
Anxious for (কারোর ব্যাপারে চিন্তিত): Sabbir was anxious for her.
Conform to (নিয়মনীতি অনুসরণ করা): The employees have to conform to a strict dress code.
Depend on (নির্ভর করা): Presently, the students depend on/upon guide books.
Effect of (প্রভাব): The effect of corruption is very harmful for our society.
Make from (কোনো উপকরণ দ্বারা সরাসরি তৈরী নয় বোঝাতে): Paper is made from bamboo.
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Idioms
All in - (পরিশ্রান্ত): I was all in after the meeting.
Seventh heaven – (মহাখুশী) – I was in the seventh heaven when I heard the news of my BCS final result.
Set something right (ঠিক করা)— He will set the machine right.
Up-to-date (আধুনিক) - Now-a-days ladies are very up to date.
Well-to-do (সঙ্গতিপূর্ণ) - He was not born in a well-to-do family.