To prolong : বাড়া; বাড়ান; প্রসারিত করা; সম্প্রসারণ করা; প্রসারিত হত্তয়া;
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Appropriate Prepositions
Admit to(ভর্তি করা): The boy was admitted to class Nine.
Aware of(অবগত): I am not aware of his dishonesty.
Concern with (জড়িত থাকা): Asif is not concerned with this conspiracy.
Despair of (নিরাশ হওয়া): Do not despair of further improvement.
Devoid of (বিহীন/বর্জিত): He is devoid of common sense.
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Idioms
At least (in the lowest estimate- কমপক্ষে) He is the owner of thirty lakh taka at least.
Call to mind (স্মরণ করা): I cannot call to mind your cell number.
Head and ears (সম্পূর্ণরূপে): He is over head and ears in debt.
In black and white – (লিখিতভাবে) – Put forward your proposal in black and white.
In the long run (পরিণামে): You will have to suffer in the long run.