Crack-a-jack : মেধাবী;
Related Words
crack-a-jack  crack-jaw  See Words Also In
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Appropriate Prepositions
Burst out a laughter(হাসিতে ফেটে পড়া) He bursts out a laughter.
Depend upon (নিশ্চিত থাকা, আস্থা রাখা): Sumi depended upon his word.
Die of (রোগে মরা): Many people died of cholera.
Hit upon (পরিকল্পনা নেয়া): Rahim hit upon a new plan.
Qualified for (যোগ্য প্রতিপন্ন হওয়া): No candidate was properly qualified for the post.
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Idioms
Bad blood - (শত্রুতা): There has always been bad blood between these families.
Fair play (প্রতারণা বিহীন নীতি বা কাজ): I believe in the practice of fair play in my business.
Irony of fate (ভাগ্যের পরিহাস): He could not succeed by irony of fate.
Red letter day (স্মরণীয় দিন): The 16th December is a red letter day for us.
Turn down (refuse, প্রত্যাখান করা) —He turned down my proposal.