Perturbation : ব্যাকুলতা; উদ্বেগ; চাঁচল্য; বিচলন; চঁচলতা; ক্ষোভ; দুশ্চিন্তা;
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Appropriate Prepositions
Add to (বৃদ্ধি করা, যোগ করা): The doll-dance in the exhibition added to our pleasure.
At lunch (দুপুরের খাবারে): They were talking so much at lunch that their food went cold.
Catch at(ধরা): A drowning man catches at a straw.
Concentrate on(কেন্দ্রীভূত করা): Try to concentrate your attention on your studies.
Count upon(নির্ভর করা): He always counts upon your help for this work.
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Idioms
Burning question - (গুরুত্বপূর্ন বিষয়): Poverty problem is a burning question of our country.
In black and white – (লিখিতভাবে) – Put forward your proposal in black and white.
Silver tongue (মিষ্টভাষী)- He is a man of silver tongue.
Widow’s mite (দরিদ্রের ক্ষুদ্র দান): A windows mite is no less important than a large contribution of a rich man.
Without fail (অবশ্যই) - You must attend the meeting without fail.