Free of cost : নিখরচা;
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Appropriate Prepositions
Antipathy to/towards (ঘৃনা): I have a strong antipathy to smoking.
Ask about (কাউকে খোঁজ করা): Rahim asked about Karim.
Call for(চাওয়া): I will call for his explanation.
Convert to(দীক্ষিত): Tom is converted to another religion.
Faith in (বিশ্বাস): I have no faith in him.
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Idioms
Out of sorts (সামান্য অসুস্থ): The baby is out of sorts after playing.
Run into debt (ঋণগ্রস্ত হওয়া)— He ran into debt.
See to (বিবেচনা করা)— Can you see to it that everyone gets a copy of this memo?
To and fro (hither and thither, এদিক ওদিক)-The man is walking to and fro.
Well off (স্বচ্ছল) - Jim and Della were not well off.