Free of cost : নিখরচা;
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Appropriate Prepositions
Appetite for(ক্ষুধা): He has no appetite for food.
Ask for (কোনো কিছু চাওয়া): Do not ask him for any help because he doesn’t like to help anyone.
Break in (কথার মাঝে কথা বলা): As she was talking, he suddenly broke in, saying, ‘that’s a rat!’
Conscious of(সচেতন): I am conscious of my deficiencies.
Entrust to (কাউকে কোনো কিছু বিশ্বাস করে দেওয়া): He entrusted the thing to me.
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Idioms
At a discount (অনাদৃত) Female education is no longer at a discount now.
Out of order (বিকল): The elevator was out of order.
Speed money (ঘুষ; উৎকোচ): He hankers after speed money.
To go to the dogs (গোল্লায় যাওয়া)- He has gone to the dogs by keeping evil company.
Yellow dog (হীন ব্যক্তি) - A yellow dog is always hated by all.