Alertness : সতর্কতা;
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Appropriate Prepositions
Adapt to(খাপ খাওয়ানো): Everybody must adopt himself to new environment.
Die of, for, from (মারা যাওয়া): He died of cholera. He died for his country. He died from an injury.
Identical with (একই ধরণের): You are identical with your sister.
Match for (প্রতিদ্বন্দ্বী): He is no match for me.
Sanguine of (নিশ্চিত বা আশান্বিত): Be sanguine of your success.
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Idioms
Call to mind (স্মরণ করা): I cannot call to mind your cell number.
Cut to the quick (মর্মাহত হওয়া): I was cut to the quick by his birds.
Irony of fate (ভাগ্যের পরিহাস): He could not succeed by irony of fate.
Slow coach (অলস): You cannot expect much from a slow coach.
Well-to-do (সঙ্গতিপূর্ণ) - He was not born in a well-to-do family.