For many days : কতদিন;
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Appropriate Prepositions
Abstain from(বিরত থাকা): I am trying to abstain from sweets for my new diet.
Adjacent to(সংলগ্ন): The Post Office is adjacent to my house.
Attacked with(আক্রান্ত): He is attacked with …
Consist of(গঠিত হওয়া): The committee consists of ten members.
Indispensable to (অত্যাবশ্যকীয়): Your help is indispensable to him.
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Idioms
Be all and end all (the ultimate out come- চরম পরিণতি—n) A loss of one million taka was the be all and end all of the projects.
Gala day (বিশেষ দিন): The Eid–Ul-Fitr is a gala day for Muslims.
Hard nut to crack (কঠিন সমস্যা): The problem of adult education is really hard nut to crack.
Irony of fate (ভাগ্যের পরিহাস): He could not succeed by irony of fate.
Out of order (বিকল): The elevator was out of order.