Take cognizance of : সরকারীভাবে লক্ষ্য করা;
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Appropriate Prepositions
Attend on/upon (সেবা করা): We should attend on/upon the ailing patient.
Count on/upon (নির্ভর, বিশ্বাস করা): Rahim count on (upon) my help.
Indifferent to (উদাসীন): Everybody is indifferent to my problem.
Rejoice at/in (আনন্দ করা): Everybody rejoiced at/in his success.
Work with (কারো সাথে কাজ করা): They will be working with me on the new project.
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Idioms
At a discount (অনাদৃত) Female education is no longer at a discount now.
Bad bargain (purchasing at a high price-বেশি দামে কেনা-n) You had a bad bargain of the watch I see.
See to (বিবেচনা করা)— Can you see to it that everyone gets a copy of this memo?
Swan-song (অন্তিম গীত, শেষ কর্ম): This writing is the swan song of Kazi Nazrul islam.
Yellow dog (হীন ব্যক্তি) - A yellow dog is always hated by all.