Empirical formula : স্থূল সূত্র;
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Appropriate Prepositions
Burst into(কান্নায় ভেঙ্গে পড়া): He burst into tears.
Faithful to (বিশ্বস্ত): The dog is very faithful to its master.
Guilty of (অপরাধী/দোষী): The convict was guilty of murder.
Rely on (নির্ভর করা): We should not rely on a lazy man.
Short of (অপর্যাপ্ত): I am running short of money.
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Idioms
Base born (নীচ বংশজাত, খারাপ জাত—adj.) He is a base born person; I cannot go along well with him.
Lame excuse (বাজে ওজর): The lame excuse will not do.
Pack of lies (ডাঁহা মিথ্যা)—He told pack of lies to prove himself innocent.
Safe and sound (নিরাপদে)— He reached home safe and sound.
Weal and woe (সুখ-দুঃখ): Human life is full of weal and woe.