Now and then( মাঝে মাঝে ) He comes here now and then.
In the nick of time( ঠিক সময়ে ) The school team arrived in the nick of time.
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.
At one’s wit’s end ( হতবুদ্ধি ) He was at his wit’s end and did not know what to do.
Red letter day( স্মরণীয় দিন ) The 21 February is a red letter day in the history of Bangladesh.
