Helpfulness : উপকারিতা; কাজেরতা;
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Appropriate Prepositions
Count upon(নির্ভর করা): He always counts upon your help for this work.
Heir of (উত্তরাধিকারী): He is the heir of his father.
Inquire of, about, into, after (অনুসন্ধান করা): Roma inquired of me about my father’s health. The pope will inquire into the cause of fire. Mehjabin inquired after her friends.
Object to (আপত্তি করা): He objected to my proposal.
Relevant to (প্রাসঙ্গিক): Your answer is not exactly relevant to my question.
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Idioms
Do yeoman’s service (বিশেষ উপকার করা): Freedom fighters have done yeoman’s service for country.
Riding for a fall (বেপরোয়াভাবে কাজ করা- to act recklessly): He rides for a fall in the election.
Take to heart (মর্মাহত হওয়া)- He really took it to heart when I asked him to reconsider.
With a view to (উদ্দেশ্য)- He goes to college with a view to attending the class.
Yellow dog (হীন ব্যক্তি) - A yellow dog is always hated by all.