Fingerboard : চাবির সারি; কী-বোর্ড;
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Appropriate Prepositions
Ashamed of(লজ্জিত): Nandini was ashamed of his wrong-doing.
Catch at(ধরা): A drowning man catches at a straw.
Control over(নিয়ন্ত্রণ): He has no control over his sons.
Desire for (কামনা): He has no desire for fame.
Devoid of (বিহীন/বর্জিত): He is devoid of common sense.
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Idioms
ABC - (প্রাথমিক জ্ঞান): I don't know the ABC of politics.
At one’s elbow (near at hand — হাতের কাছে – adv.) His private secretary is always at his elbow.
As ill-luck would have it (unfortunately- দুর্ভাগ্যবশত) A child was born to them but, as ill-luck would have it, it died when it was eight days old.
Gain Ground (সুবিধা পাওয়া): The wise are said to gain the ground in the long run.
In vogue (চালু): This custom is not in vogue at present.