Letter of regret : অসম্মতিপত্র;
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Appropriate Prepositions
Attacked with(আক্রান্ত): He is attacked with …
Authority on(বিশেষজ্ঞ পন্ডিত): Kamal was an authority on English literature.
Consent to(মত দেওয়া): My father did not consent to the proposal of my sister’s marriage.
Consolidate for (শক্তিশালী করা): The four new companies consolidated for greater efficiency.
Look after (দেখাশুনা): He looks after me.
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Idioms
At ease (in peace or pleasure – শান্তিতে বা আরামে) A man who has enemies can not live at ease.
At-fault (guilty-কিংকর্তব্যবিমূঢ়, অপরাধ, দোষ adj.) You are at fault.
End in smoke (ব্যর্থ হওয়া): All his plans ended in smoke.
Lose one’s heart (প্রেমে পড়া) — He lost his heart to the girl.
Seventh heaven – (মহাখুশী) – I was in the seventh heaven when I heard the news of my BCS final result.