In a fix( মুশকিলে পতিত ) He is in a fix and does not know what to do.
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.
Stone's throw ( অতি নিকটে ) Our school is at a stone's throw form our house.
In vain( বৃথা ) All his attempts were in vain.
Achilles heel( দুর্বলতা বা ত্রুটি ) He is trying to hide but everybody knows his achilles' heel
Fight shy( এড়িয়ে চলা ) Why do you fight shy of your teacher.