From time immemorial : স্মরণাতীত কাল হইতে;
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Appropriate Prepositions
Concerned with(জড়িত): She was concerned with such things.
Convict of(দোষী সাব্যস্ত হওয়া): The accused person was convicted of the murder.
Creep up (বৃদ্ধি পাওয়া): The prices of are creeping up day by day.
Hinge on/upon (নির্ভর করা): The whole matter hinges upon this clue.
Hope for (আশা করা): Let us hope for the best.
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Idioms
At death’s door (at the point of death- মৃত্যুর দ্বারে) The patient is now at death’s door.
As a whole (মোটের উপর, সম্পূর্ন এক মনে করে-adv.) Look at life as a whole and you will see that it is meaningful.
Lose heart (হতাশ হওয়া) — Do not lose heart in danger.
Speed money (ঘুষ; উৎকোচ): He hankers after speed money.
With might and main (যথা শক্তি দিয়ে) —He tried with might and main to help me.