Crack-a-jack : মেধাবী;
Related Words
crack-a-jack  crack-jaw  See Words Also In
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Appropriate Prepositions
Deal in, with, out (ব্যবসা করা, ব্যবহার করা, বন্টন করা): The man deals in rice. He does not know how to deal with a customer. The Chairman dealt out the relief materials to the flood affected people.
Detrimental to (অপকারী): Smoking is detrimental to health.
Side with (পক্ষ অবলম্বন করা): The Chairman sided with the powerful party.
Take after (সদৃশ হওয়া, একই রকম হওয়া): The boy takes after his brother.
Yield to (নতি স্বীকার করা): I shall not yield to his temptation.
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Idioms
Far and wide (সর্বত্র): His fame spread far and wide.
For good (চিরদিনের জন্য): He left the house for good.
See to (বিবেচনা করা)— Can you see to it that everyone gets a copy of this memo?
Ups and downs (উত্থান পতন): There are ups and downs in a man’s life.
Up-to-date (আধুনিক) - Now-a-days ladies are very up to date.