Air shaft : খনি মধ্যে বাতাস ঢোকানর জন্য পথ;
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Appropriate Prepositions
Ask for (কোনো কিছু চাওয়া): Do not ask him for any help because he doesn’t like to help anyone.
Cope with(সামলানো বা পেরে উঠা): They cannot cope with the situation.
Inquire into (খতিয়ে দেখা): The police officer will inquire into the matter.
Look over (পরীক্ষা করা): He was looking over the answer scripts.
Quick at (চটপটে): A cashier must be quick at figures.
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Idioms
Cut to the quick (মর্মাহত হওয়া): I was cut to the quick by his birds.
Make both ends meet (আয় ব্যয় মেলানো): I cannot make both ends meet with my small income.
Pros and cons (খুঁটিনাটি): You should consider the pros and cons of the system.
Salt of the earth (গুরুত্বপূর্ণ ব্যক্তিবর্গ) —The salt of the earth is remembered always.
Set something right (ঠিক করা)— He will set the machine right.