In the first instance : প্রথমত; প্রথম অবস্থায়;
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Appropriate Prepositions
Concern with (জড়িত থাকা): Asif is not concerned with this conspiracy.
Contemporary of (সমসাময়িক): William Wordsworth was a contemporary for greater efficiency.
Deal in (কোনো কিছুর ব্যবসা করা): They deal in green vegetables.
Hatred for (ঘৃণা): I have no hatred for anyone.
Thirst for (তৃষ্ণা, আকাঙ্ক্ষা): A wise man has no thirst for wealth.
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Idioms
At last (in the end – অবশেষে) He tried hard, and at last, succeeded in achieving his goal.
Learn by heart (মুখস্থ করা)— He learnt the poem by heart.
On the whole (মোটের ওপর): On the whole, his conduct is good.
Swan-song (অন্তিম গীত, শেষ কর্ম): This writing is the swan song of Kazi Nazrul islam.
Turn over a new leaf (begin a new phase of life, নবজীবন শুরু করা) —After his failure he turned over a new leaf.