Atomic mass : পারমাণবিক ভর;
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Appropriate Prepositions
Annoyed for(কোনো কারনে বিরক্ত হওয়া): The officer was annoyed with the clerk for being late.
Attention to(মনোযোগ): He has no attention to his studies.
Conceal from(লুকানো) Do not conceal anything from me.
Enter into (আলোচনা করতে আরম্ভ করা): Let’s not enter into details at this stage.
Rule over (শাসন করা): In the absence of the Parliament, the President rules over the country.
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Idioms
Acid test (অগ্নি পরীক্ষা): You must succeed in the acid test of the time you live in.45
All up with - (পুরোপুরি, হতাশ, সব আশা শেষ): If we can't, it's all up with the councillor.
In cold blood (ঠান্ডা মাথায়): They committed this murder in cold blood.
In black and white – (লিখিতভাবে) – Put forward your proposal in black and white.
Up to (পর্যন্ত) - I have done the exercises up to page 40.