Semicentennial : অর্ধ-শতবার্ষিক;
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Appropriate Prepositions
Addicted to(খারাপ কিছুতে আসক্ত): She is addicted to collecting stamps.
Adequate to(সমানুপাতিক): The salary, he gets, is not adequate to the volume of work he has to do.
Appear at/in(উপস্থিত হওয়া): I should appear at/in the exam hall in time.
Appropriate to(যোগ্য): His answer is appropriate to the question.
Behave towards(ব্যবহার করা): The students behaved objectionably towards the Head teacher.
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Idioms
At one’s elbow (near at hand — হাতের কাছে – adv.) His private secretary is always at his elbow.
Back and forth (এদিক ওদিক) The mad man was running back and forth in the hospital.
Set something right (ঠিক করা)— He will set the machine right.
Worthy of (যোগ্য) - He is worthy of a good job.
With a lavish hand (মুক্ত হস্তে)— Give away something with a lavish hand.