To be sure : নিশ্চয়ই; আমি স্বীকার করি; তাই নাকি;
Related Words
to absorb  to be sure  to obscure  See Words Also In
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Appropriate Prepositions
Add to (বৃদ্ধি করা, যোগ করা): The doll-dance in the exhibition added to our pleasure.
Convinced of (আশ্বস্ত): You are convinced of his product.
Monument to (স্মৃতিসৌধ): The monument to your right is a popular tourist attraction.
Rule over (শাসন করা): In the absence of the Parliament, the President rules over the country.
Similar to (সদৃশ): My T-shirt is similar to yours.
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Idioms
Art and part (অভিসন্ধি ও সম্পাদন) We have no art and part in his affairs.
In vogue (চালু): This custom is not in vogue at present.
Red letter day (স্মরণীয় দিন): The 16th December is a red letter day for us.
Three R's (প্রাথমিক শিক্ষা)— He has not yet learnt the three R's.
Tide over (বিপদ অতিক্রম করা-overcome ): The manager tided over the situation.