Harmonic series : বিপরীত শ্রেণী; বিপরীত শ্রেণি;
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Appropriate Prepositions
Abhorrent to(ঘৃণ্য): Racism of any kind is abhorrent to me.
Call on(কারও সাথে দেখা করা): I called on him in his office.
Hanker after (আকাঙ্ক্ষা/লোভ করা): He hankers after riches.
Look at (তাকানো): Students look at the blackboard.
Work for (কারো জন্য কাজ করা): She works for a construction company.
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Idioms
Dead of night (মধ্যরাত্রি): The robbers broke into the house at dead of night.
Eat humble pie (অপমান হজম করে ক্ষমা চাওয়া): The manager had to eat humble pie before his employees.
Ins and out (খুঁটিনাটি): I know ins and outs of this file.
Silver tongue (মিষ্টভাষী)- He is a man of silver tongue.
Take to one's heels (to run away, পালানো)- They took to their heels when they saw the policeman approaching.