Fly-by-night : বিমানপোতের নৈশধাবন;
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Appropriate Prepositions
Ashamed of(লজ্জিত): Nandini was ashamed of his wrong-doing.
Attest to(প্রত্যয়ন করা): I like to attest to your ability.
Cure of, for(রোগমুক্ত হওয়া): This man was cured of This drug is a cure for typhoid.
Look after (দেখাশুনা): He looks after me.
Sorry for (দুঃখিত): He is sorry for his misdeeds.
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Idioms
At random (indiscriminately—এলোপাথাড়ি-adv.) He talks at random like a mad man.
Backstairs influence (secret and illegal influence- গোপন এবং বে আইনী প্রভাব-n) He did not deseve the job, however, he got it by backstairs influence.
Easy and free (অমায়িক): The boy is easy and free, so he has many friends.
Head and ears (সম্পূর্ণরূপে): He is over head and ears in debt.
Pandora’s box (আপাতঃ দৃষ্টিতে ভালো মনে হলেও আসলে ভালো নয়)—His words proved to be Pandora’s box.