Optional : ঐচিছক, স্বেচছামলক
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Appropriate Prepositions
Call on(কারও সাথে দেখা করা): I called on him in his office.
Convert to(দীক্ষিত): Tom is converted to another religion.
Look up (ডিকশনারি থেকে শব্দার্থ খোঁজা): He is looking up a new word meaning from dictionary.
Substitute for (বদলে দেওয়া): This action is substitute for that.
Take pity on (দয়া করা): Take pity on the helpless people.
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Idioms
Bring to book (reproach-Start- ভর্ৎসনা করা) The father brought his son to book for his failure in the exam.
Birds of a feather (persons of like disposition-একই পর্যায়ের লোক) Bird’s of a feather flock together.
In no time (শীঘ্র): He will finish the work in no time.
Pack up a quarrel (ঝগড়া মিটানো)— He packed up their quarrel.
With the sweat of one’s brow (মাথার ঘাম পায়ে ফেলে) — He earns his livelihood with the sweat of his brow.