Commanding officer : অধিনায়ক অফিসার;
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Appropriate Prepositions
Hostile to (বিরোধী বা বিরূপ ভাবাপন্ন): Nobody is hostile to you.
Play on (বাজানো): They play on the piano.
Play with (খেলা করা/ মজা করা): I shall not play with him.
Repent on (নির্ভরশীল): He is repent on his parents.
Senior to (বয়সে বড়): He is senior to me by two years.
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Idioms
After all - (সব কথার পরেও): I rang and told her I couldn't come after all.
All at once - (হঠাৎ): I feel terribly sleepy all at once.
Head and ears (সম্পূর্ণরূপে): He is over head and ears in debt.
In no time (শীঘ্র): He will finish the work in no time.
Stone’s throw (অতি নিকটে): Our school is at a stone’s throw from our house.