At a loss( হতবু্দ্ধি ; কিংকর্তব্যবিমূঢ় ) He was at a loss and did not know what to do.
At least( অন্ততঃ ) At least one hundred boys will come to school today.
Bed of roses( আরামদায়ক অবস্থা ) Life is not a bed of roses.
At once back and call( বাধ্য ) He is always at my back and call.
when pigs fly( কখনও না ) I will help you when pigs fly
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.
