Call in question( সন্দেহ করা ) No one can call his honesty in question.
At the eleventh hour( শেষ মুহূর্তে ) The doctor came to the patient at the eleventh hour.
Hard nut to crack( কঠিন সমস্যা ) The problem of adult education is really a hard nut to crack.
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.
Build castles in the air( আকাশ কুসুম চিন্তা করা ) Don't idle away your time in building castles in the air.
All at once( হঠাৎ ) All at once a tiger came out of the forest.
