Long standing : দীর্ঘকালস্থায়ী;
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Appropriate Prepositions
Alarm at, by, for(আশংকা করা/শঙ্কিত হওয়া): I was not alarmed at/by the news, but I was alarmed for their safety.
Conceal from(লুকানো) Do not conceal anything from me.
Grateful to (কৃতজ্ঞ): We should be grateful to our teachers.
Hanker after (আকাঙ্ক্ষা/লোভ করা): He hankers after riches.
Married to (বিবাহিত): Salma was married to a Govt. Officer.
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Idioms
At the latest (খুব বেশি দেরী হলে) He will arrive here at 5 p. m. at the latest.
Fair play (প্রতারণা বিহীন নীতি বা কাজ): I believe in the practice of fair play in my business.
Gain Ground (সুবিধা পাওয়া): The wise are said to gain the ground in the long run.
Safe and sound (নিরাপদে)— He reached home safe and sound.
With the sweat of one’s brow (মাথার ঘাম পায়ে ফেলে) — He earns his livelihood with the sweat of his brow.