For a long time : দীর্ঘসময়ের মধ্যে; বহুকাল ধরিয়া; কতকাল; কতদিন;
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Appropriate Prepositions
Decide upon (সিদ্ধান্ত করা): We have not yet decided whether we are going to picnic.
Eager for, about (একাগ্র): The students for this school are eager for knowledge. The teacher is eager about the success of his students.
Hit upon (পরিকল্পনা নেয়া): Rahim hit upon a new plan.
Substitute for (বদলে দেওয়া): This action is substitute for that.
Suffer from (অসুখে ভোগা, কষ্ট পাওয়া): He has been suffering from fever for last three days.
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Idioms
All along - (সব সময়): I was present in the meeting all along.
Die in harness (কর্মরত অবস্থায় মারা যাওয়া): Dr. Sen died in harness.
Get rid of (মুক্তি পাওয়া): Try to get rid of the rogue.
Lose heart (হতাশ হওয়া) — Do not lose heart in danger.
To the point (সঠিক) - The boy answered the question to the point.