If not : যদি না;
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Appropriate Prepositions
Agree with(ব্যক্তির সাথে একমত হওয়া): I agree with you.
Charge with(অভিযুক্ত করা): He is charged with killing.
Genius for (দক্ষতা): Nazrul had a genius for convincing girls.
Point out (চিহ্নিত করা): Point out the mistakes from the book.
Sad at (দুঃখিত): All his colleagues were very sad at his transfer from this place.
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Idioms
Do yeoman’s service (বিশেষ উপকার করা): Freedom fighters have done yeoman’s service for country.
Give one’s right arm (বিপদের ঝুকি নেয়া): I will give my right arm if I could manage the tickets.
Tooth and nail (তীব্রভাবে): He fought tooth and nail for the sake of country.
Ups and downs (উত্থান পতন)- There is ups and downs in a man's life.
Well-to-do (সঙ্গতিপূর্ণ) - He was not born in a well-to-do family.