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.
By the by( প্রসঙ্গক্রমে ) By the by I came to know that he was ill.
By hook or by crook ( যে কোন উপায়ে ) You must do this work by hook or by crook.
Take to heart( মর্মাহত হওয়া ) He took his remark to heart.
Breathe one's last( মারা যাওয়া ) The old man breathed his last on Sunday last.