At fault : কিংকর্তব্যবিমূঢ়;
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Appropriate Prepositions
Annoyed with(ব্যক্তির সাথে বিরক্ত হওয়া): I am annoyed with him.
Bask in(রোদ পোহানো): The boys and girls are basking in the sun right now.
Deal with (কারো সাথে ব্যবহার বা আচরণ করা): Shahid can deal well with the customers.
Sad at (দুঃখিত): All his colleagues were very sad at his transfer from this place.
Welcome to (স্বাগত জানানো): You are welcome to our new office.
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Idioms
As a rule (নিয়ম অনুসারে.) As a rule, she kept silent in the meeting.
On the contrary (বিপরীত পক্ষে): I do not hate him; on the contrary I love him.
Pandora’s box (আপাতঃ দৃষ্টিতে ভালো মনে হলেও আসলে ভালো নয়)—His words proved to be Pandora’s box.
Red letter day (স্মরণীয় দিন): The 16th December is a red letter day for us.
Red tape (official formalities, অফিসের কাজ)— You would not believe the red tape involved in getting the required permits.