Airshaft : খনি মধ্যে বাতাস ঢোকানর জন্য পথ;
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Appropriate Prepositions
Ascend to (আরোহণ করা): karim began to ascend to the surface of wakefulness.
By heart (মুখস্থ): Kamal learnt to poem by heart.
Hostile to (বিরোধী বা বিরূপ ভাবাপন্ন): Nobody is hostile to you.
Married to (বিবাহিত): Salma was married to a Govt. Officer.
Rid of (মুক্তি দেওয়া): He will get rid of troubles soon.
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Idioms
All along - (সব সময়): I was present in the meeting all along.
Do yeoman’s service (বিশেষ উপকার করা): Freedom fighters have done yeoman’s service for country.
Safe and sound (নিরাপদে)— He reached home safe and sound.
To the backbone (হাড়ে হাড়ে): I know this boy to the backbone.
Tide over (বিপদ অতিক্রম করা-overcome ): The manager tided over the situation.