In vogue ( চালু ) This custom is not in vogue now.
A blessing in disguise ( বিপরীতে হিত ; প্রথমে খারাপ হিসেবে মনে হলেও পরবর্তীতে ভালো হয় ) Sam's motorcycle accident was a blessing in disguise because he got enough insurance money.
In black and white ( লিখিতভাবে ) Put down the statement in black and white.
ABC ( প্রাথমিক জ্ঞান ) Everybody must know at least the ABC of religion.
At stake ( বিপন্ন ) His life is at stake now.
In a fix ( মুশকিলে পতিত ) He is in a fix and does not know what to do.