Watch and ward : নগরে ও শহরে দিবসে ও রাত্রে প্রহরা;
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Appropriate Prepositions
Argue against (বিপক্ষে বলা): She argued against the bill.
Charge with(অভিযুক্ত করা): He is charged with killing.
Deal with (কারো সাথে ব্যবহার বা আচরণ করা): Shahid can deal well with the customers.
Desist from (বিরত থাকা): She desisted from making this.
Hostile to (বিরোধী বা বিরূপ ভাবাপন্ন): Nobody is hostile to you.
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Idioms
At last (in the end – অবশেষে) He tried hard, and at last, succeeded in achieving his goal.
At death’s door (at the point of death- মৃত্যুর দ্বারে) The patient is now at death’s door.
Dead against (তীব্র বিরোধী - strongly opposed to): I am dead against corruption.
Fair and square (সৎ): The learned persons should be fair and square.
Turn down (refuse, প্রত্যাখান করা) —He turned down my proposal.