Sweat blood : খেটে কাজ করা; প্রচণ্ড মেহনত করা; মুখে রক্ত তুলে কাজ করা; অত্যন্ত উৎকণ্ঠিত হওয়া;
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Appropriate Prepositions
Answer for(কোনো কারনে জবাবদিহি করা): He will have to answer for his misdeeds.
Complain about (কোনো বিষয়ে নালিশ করা): They complained about the mismanagement of the programme.
Convenient to(সুবিধাজনক): The work is convenient to your nature.
Indifferent to (উদাসীন): Everybody is indifferent to my problem.
Welcome to (স্বাগত জানানো): You are welcome to our new office.
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Idioms
Bear in mind (মনে রাখা): Always bear in mind that you are a daughter of a reputed person.
Dead of night (মধ্যরাত্রি): The robbers broke into the house at dead of night.
Make head or tail – (মাথামুন্ডু বুঝা) – I cannot make head or tail of what you say.
Three R's (প্রাথমিক শিক্ষা)— He has not yet learnt the three R's.
To the contrary (against what some one had said, পক্ষান্তরে) —He said nothing to the contrary.