Watch and ward : নগরে ও শহরে দিবসে ও রাত্রে প্রহরা;
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Appropriate Prepositions
Contemporary of (সমসাময়িক): William Wordsworth was a contemporary for greater efficiency.
Die of (রোগে মরা): Many people died of cholera.
Quarrel over (কোন বিষয়ে ঝগড়া করা): Do not quarrel over this trifling matter, let it be drop.
Relation with (সম্পর্ক): I have no relation with the culprit.
Sanguine of (নিশ্চিত বা আশান্বিত): Be sanguine of your success.
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Idioms
At dead of night (গভীর রাতে) The police caught the thief at dead of night.
Give one’s right arm (বিপদের ঝুকি নেয়া): I will give my right arm if I could manage the tickets.
Head and ears (সম্পূর্ণরূপে): He is over head and ears in debt.
On the wane (হ্রাসমান): His fame is on the wane now.
Silver tongue (মিষ্টভাষী)- He is a man of silver tongue.