Key signature : সংগীতে স্কেল পরিবর্তনের চিহ্ন;
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Appropriate Prepositions
Certain of(নিশ্চিত): Jamal is certain of his success.
Charge with(অভিযুক্ত করা): He is charged with killing.
Crave for(আকাঙ্ক্ষা করা): Everyone craves for care.
Dull of (বধির; কানে শুনে না): He is dull of hearing.
Meet with (হঠাৎ কোন কিছু হওয়া): Yesterday I met with an accident.
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Idioms
At home (comfortable— আরাম) He feels at home in Dhaka now.
At liberty (free-মুক্ত-adj.) They are at liberty to go anywhere.
As a rule (নিয়ম অনুসারে.) As a rule, she kept silent in the meeting.
Salt of the earth (গুরুত্বপূর্ণ ব্যক্তিবর্গ) —The salt of the earth is remembered always.
Silver living (hope- আশা বা ভালো দিক): Every cloud has a silver lining.