By air mail : বিমান ডাকে;
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Appropriate Prepositions
Abide in(বাস করা): I abide in Dhaka with my family.
Argue with, about(কথা কাটাকাটি করা): They always argue with me about tiny matter.
Breakdown of (বিস্তারিত): Here is statistical breakdown of data.
Senior to (বয়সে বড়): He is senior to me by two years.
Stick to (দৃঢ়ভাবে লেগে থাকা): We should always stick to our decisions.
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Idioms
At one’s elbow (near at hand — হাতের কাছে – adv.) His private secretary is always at his elbow.
Dead against (তীব্র বিরোধী - strongly opposed to): I am dead against corruption.
Out of temper (ক্রুদ্ধ): The teacher is out temper to see the overall results.
Swan-song (অন্তিম গীত, শেষ কর্ম): This writing is the swan song of Kazi Nazrul islam.
Through thick and thin (through all difficulties, সমস্ত সমস্যার মধ্যে)-Ruma followed her husband through thick and thin.