At one’s wit’s end ( হতবুদ্ধি ) He was at his wit’s end and did not know what to do.
Carry the day( জয়লাভ করা ) Rajib, the best player of the school, carried the day in the annual sports.
Hold good( প্রযুক্ত হওয়া ) This ruls will not hold good here.
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.
Of course( অবশ্যই ) Of course, you know what that means
Lion's share( সিংহভাগ ) He took the lion's share of the profit.