Red letter day( স্মরণীয় দিন ) The 21 February is a red letter day in the history of Bangladesh.
As usual ( যথারীতি ) He is late as usual.
Weal and woe( সুখ-দুঃখ ) Human life is full of weal and woe.
Bring to light( প্রকাশ করা ) At last all the facts were brought to light.
In force( বলবৎ ) This law is in force 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.