Hexavalent : ষড়যোজী;
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Appropriate Prepositions
Desire for (কামনা): He has no desire for fame.
Dull at (অপ্টু/কাঁচা): He is dull at mathematics.
Guard from/against (রক্ষা করা): My parents always guard me from/against bad people.
Point out (চিহ্নিত করা): Point out the mistakes from the book.
Rely on (নির্ভর করা): We should not rely on a lazy man.
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Idioms
Acid test (অগ্নি পরীক্ষা): You must succeed in the acid test of the time you live in.45
At death’s door (at the point of death- মৃত্যুর দ্বারে) The patient is now at death’s door.
Kith and kin (নিকট আত্মীয়): He has no relation with his kith and kin.
Through thick and thin (through all difficulties, সমস্ত সমস্যার মধ্যে)-Ruma followed her husband through thick and thin.
To the letter (in all details, অক্ষরে অক্ষরে) —Follow my advice to the letter.