On guard : হাতিয়ার তৈয়ার;
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Appropriate Prepositions
Absorbed in(মগ্ন): I am absorbed in my study.
Apart from(ছাড়া, ব্যতীত, দূরে): They pave apart from each other.
Behave towards(ব্যবহার করা): The students behaved objectionably towards the Head teacher.
Conceal from(লুকানো) Do not conceal anything from me.
Control over(নিয়ন্ত্রণ): He has no control over his sons.
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Idioms
Far and wide (সর্বত্র): His fame spread far and wide.
Lose heart (হতাশ হওয়া) — Do not lose heart in danger.
Riding for a fall (বেপরোয়াভাবে কাজ করা- to act recklessly): He rides for a fall in the election.
Take one to task (rebuke, তিরস্কার করা)— He took me to task for negligence of duty.
Upper hand (প্রাধান্য) - He got the upper hand in the selection.