Co-operator : সহযোগী; সহায়ক;
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Appropriate Prepositions
Adapt to(খাপ খাওয়ানো): Everybody must adopt himself to new environment.
Agree to(ব্যক্তি ছাড়া অন্যকিছুর সাথে একমত হওয়া): We cannot agree to your proposal.
Apology for (কোনো কারনে ক্ষমা চাওয়া): Sajib should ask apology to her of his mistake.
Astonished at(বিস্ময়-বিহবল হওয়া): We were astonished at his unexpected success.
Delighted at/with (আনন্দিত হওয়া): Sharmin was delighted at/with her husband’s promotion.
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Idioms
Bad blood - (শত্রুতা): There has always been bad blood between these families.
Irony of fate (ভাগ্যের পরিহাস): He could not succeed by irony of fate.
Lame excuse (বাজে ওজর): The lame excuse will not do.
Make head or tail – (মাথামুন্ডু বুঝা) – I cannot make head or tail of what you say.
Well-to-do (সঙ্গতিপূর্ণ) - He was not born in a well-to-do family.