Take an oath : শপথ করা; বিদ্য করা; হলফ করা; কসম খাত্তয়া;
Related Words
take account of  take an oath  take notice  taken on hand  taken out  See Words Also In
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Appropriate Prepositions
Annoyed at(ব্যক্তি ছাড়া অন্যকিছুর প্রতি বিরক্ত): They were annoyed at his rough behavior.
Astonished at(বিস্ময়-বিহবল হওয়া): We were astonished at his unexpected success.
Damage to (ক্ষতি): The flood caused much damage to crops last year.
Rejoice at/in (আনন্দ করা): Everybody rejoiced at/in his success.
Shout at (চিৎকার করে ডাকা): Do not shout at your parents.
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Idioms
All in - (পরিশ্রান্ত): I was all in after the meeting.
At a discount (অনাদৃত) Female education is no longer at a discount now.
At dead of night (গভীর রাতে) The police caught the thief at dead of night.
At random (indiscriminately—এলোপাথাড়ি-adv.) He talks at random like a mad man.
On the contrary (বিপরীত পক্ষে): I do not hate him; on the contrary I love him.