Watch and ward : নগরে ও শহরে দিবসে ও রাত্রে প্রহরা;
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Appropriate Prepositions
Adorn with(সাজানো/সজ্জিত করা): Adorn the car with flowers.
Ascend from (উপরে ওঠা): Rahim watched the mist ascending from the valley.
Eager for, about (একাগ্র): The students for this school are eager for knowledge. The teacher is eager about the success of his students.
Lost in (মগ্ন): Simon is lost in meditation.
Run after (পশ্চাদানুসরণ করা): Do not run after money.
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Idioms
Backstairs influence (secret and illegal influence- গোপন এবং বে আইনী প্রভাব-n) He did not deseve the job, however, he got it by backstairs influence.
In full swing (পুরোদমে): The school is in full swing after the vacation.
Make both ends meet (আয় ব্যয় মেলানো): I cannot make both ends meet with my small income.
Tooth and nail (তীব্রভাবে): He fought tooth and nail for the sake of country.
Worthy of (যোগ্য) - He is worthy of a good job.