Non-returnable : অ-ফেরতযোগ্য; অপ্রত্যর্পণীয়;
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Appropriate Prepositions
Acquit of (অব্যাহতি দেয়া): The chief justice acquitted him of the charge of murder.
Look after (দেখাশুনা): He looks after me.
Married to (বিবাহিত): Salma was married to a Govt. Officer.
Meet with (হঠাৎ কোন কিছু হওয়া): Yesterday I met with an accident.
Play at (খেলা): I do not play at cards.
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Idioms
At death’s door (at the point of death- মৃত্যুর দ্বারে) The patient is now at death’s door.
Crying need (জরুরী): Mass education is a crying need for India.
Learn by heart (মুখস্থ করা)— He learnt the poem by heart.
On the contrary (বিপরীত পক্ষে): I do not hate him; on the contrary I love him.
Under age (অপ্রাপ্ত বয়স্ক)- He could not cast his vote because he was under age.