Hexavalent : ষড়যোজী;
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Appropriate Prepositions
Abide by(মেনে চলা): We must abide by the rules of discipline.
Agree with, on, to(একমত হওয়া): My father agreed with me on this point, but he did not agree to my proposal to set up a canteen.
Anxious about (কোনো কিছুর ব্যাপারে চিন্তিত বা উদ্বিগ্ন): Karim is anxious about his father’s death. Karim is anxious for getting a job.
Argue with, about(কথা কাটাকাটি করা): They always argue with me about tiny matter.
Detrimental to (অপকারী): Smoking is detrimental to health.
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Idioms
Birds of a feather (persons of like disposition-একই পর্যায়ের লোক) Bird’s of a feather flock together.
Pack up a quarrel (ঝগড়া মিটানো)— He packed up their quarrel.
Tooth and nail (তীব্রভাবে): He fought tooth and nail for the sake of country.
To the brim (কানায় কানায়) - The river was full to the brim.
Well-to-do (সঙ্গতিপূর্ণ) - He was not born in a well-to-do family.