Crack-a-jack : মেধাবী;
Related Words
crack-a-jack  crack-jaw  See Words Also In
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Appropriate Prepositions
Authority over (কর্তৃত্ব, আধিপত্য): She has no authority over his growing daughters.
Burdened with (ভারাক্রান্ত): Rahim is burdened with a big family.
Full of (পরিপূর্ণ): Our Rivers are full of fishes.
Good for, at (ভাল): This man is good for nothing. He is good at English.
Play with (খেলা করা/ মজা করা): I shall not play with him.
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Idioms
Art and part (অভিসন্ধি ও সম্পাদন) We have no art and part in his affairs.
As a whole (মোটের উপর, সম্পূর্ন এক মনে করে-adv.) Look at life as a whole and you will see that it is meaningful.
Eat humble pie (অপমান হজম করে ক্ষমা চাওয়া): The manager had to eat humble pie before his employees.
Gain Ground (সুবিধা পাওয়া): The wise are said to gain the ground in the long run.
Make head or tail – (মাথামুন্ডু বুঝা) – I cannot make head or tail of what you say.