By leaps and bounds( অতি দ্রুতগতিতে ) The population of Bangladesh is increasing by leaps and bounds.
Wild goose chase( পন্ডশ্রম ) Do not waste time in wild goose chase.
At home( দক্ষ ) He is at home in mathematics.
Take to one's heels ( ছুটিয়া পালানো ) The thieves took to their heels to see the police.
Turn over a new leaf( নূতনের সূচনা ) After his failure he turned over a new leaf.
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.
