ABC ( প্রাথমিক জ্ঞান ) Everybody must know at least the ABC of religion.
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.
Pros and cons ( খুঁটিনাটি ) You should consider the Pros and cons of the system.
Above board ( সংশয়হীন ভাবে নির্দোষ ) His activities are open and above board.
By the by ( প্রসঙ্গক্রমে ) By the by I came to know that he was ill.
