Number one : এক নম্বর; পয়লা নম্বর; সেরা; সর্বোত্কৃষ্ট; নিজে; স্বয়ং আমি;
Related Words
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Appropriate Prepositions
Abound with(ছেয়ে থাকা): They live in a region that abounds with oil.
Apologize to (ক্ষমা প্রার্থনা করা, দুঃখসহ ত্রুটি স্বীকার করা): The student apologized to the Principal for adopting unfair means in the examination.
Concerned with(জড়িত): She was concerned with such things.
Informed of (অবহিত): I was not informed of your misfortune.
Look after (দেখাশুনা): He looks after me.
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Idioms
A bed of roses - (সুখকর অবস্থা): Life is not a bed of roses.
At least (in the lowest estimate- কমপক্ষে) He is the owner of thirty lakh taka at least.
Fight shy (এড়িয়ে চলা): Why do you fight shy of your teacher?
Gain Ground (সুবিধা পাওয়া): The wise are said to gain the ground in the long run.
Ins and out (খুঁটিনাটি): I know ins and outs of this file.