Untiringly : অবিশ্রাম; অবিশ্রামভাবে; অকাতরে;
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Appropriate Prepositions
Abound in(প্রাচুর্যপূর্ণ হওয়া): Fish abounds in the pond.
Creep up (বৃদ্ধি পাওয়া): The prices of are creeping up day by day.
Devoid of (বিহীন/বর্জিত): He is devoid of common sense.
Easy of (সরল): The teacher is easy of approach.
Rejoice at/in (আনন্দ করা): Everybody rejoiced at/in his success.
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Idioms
At ease (in peace or pleasure – শান্তিতে বা আরামে) A man who has enemies can not live at ease.
As a rule (নিয়ম অনুসারে.) As a rule, she kept silent in the meeting.
Crocodile tears (মায়াকান্না): He shed crocodile tears at our misery.
From hand to mouth (দিন আনে দিন খায়): The poor man live from hand to mouth.
With might and main (যথা শক্তি দিয়ে) —He tried with might and main to help me.