Unquestionable : সন্দেহাতীত; প্রশ্নাতীত;
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Appropriate Prepositions
Attacked with(আক্রান্ত): He is attacked with …
Attain to (লাভ করা): He will not attain to his objective so soon.
Born of(জন্মগ্রহণ করা): I was born of a middle class family.
Damage to (ক্ষতি): The flood caused much damage to crops last year.
Descend on (আক্রমণ করা): Armed thieves descended on the helpless girl.
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Idioms
At-fault (guilty-কিংকর্তব্যবিমূঢ়, অপরাধ, দোষ adj.) You are at fault.
Bad book (disfavour-খারাপ নজর —n) The secretary has fallen in the bad book of the manager.
Lion’s share (বড় মাপের অংশ): He took the lion’s share of the profit.
Lose one’s heart (প্রেমে পড়া) — He lost his heart to the girl.
Pros and cons (খুঁটিনাটি): You should consider the pros and cons of the system.