Reactivity : রিঅ্যাকটিবিটি;
Related Words
reactivate  reactivated  reactivating  reactivity  rectified  See Words Also In
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Appropriate Prepositions
Adapt for (উপযোগী করে নেওয়া): This book has been adapted for the children.
Associate with, in(জড়িত হওয়া): This man was associated with crime.
Famous for (বিখ্যাত): Smith is famous for his wisdom.
Solution to (সমাধান): None can solution to every problem.
Substitute for (বদলে দেওয়া): This action is substitute for that.
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Idioms
A bed of roses - (সুখকর অবস্থা): Life is not a bed of roses.
Black sheep - (কুলাঙ্গার): Stay away from the Black sheep.
Bear hard upon (behave rudely-নির্দয়ভাবে ব্যবহার করা - V) Never bear hard upon your servants.
Widow’s mite (দরিদ্রের ক্ষুদ্র দান): A windows mite is no less important than a large contribution of a rich man.
Well off (স্বচ্ছল) - Jim and Della were not well off.