Effective force : ত্বরণ-বল;
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Appropriate Prepositions
Abide with(সঙ্গে থাকা): If you would like to rest for a while, you can abide with me.
Absent from(অনুপস্থিত থাকা): I was absent from the class yesterday.
Cope with(সামলানো বা পেরে উঠা): They cannot cope with the situation.
Deaf to, of, in (না শোনা, বধির হওয়া): The boy is deaf to his father’s advice. This man is deaf of/in one ear.
Delegate to (প্রতিনিধি): Nazrul welcomed the delegates to the new conference.
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Idioms
Crying need (জরুরী): Mass education is a crying need for India.
Dead of night (মধ্যরাত্রি): The robbers broke into the house at dead of night.
Fall flat (ফলপ্রসূ না হওয়া): This business is going to fall flat.
Pass away (মারা যাওয়া)— He passed away last night.
Riding for a fall (বেপরোয়াভাবে কাজ করা- to act recklessly): He rides for a fall in the election.