Optimism : আশাবাদ
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Appropriate Prepositions
Conceal from(লুকানো) Do not conceal anything from me.
Good for, at (ভাল): This man is good for nothing. He is good at English.
Noted for (বিখ্যাত): She is noted for dancing.
Refrain from (বিরত রাখা বা থাকা): I refrained him from smoking.
Subsist on (বেঁচে থাকা): The poor subsist mainly on rice and pulses.
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Idioms
All along - (সব সময়): I was present in the meeting all along.
In full swing (পুরোদমে): The school is in full swing after the vacation.
Kith and kin (নিকট আত্মীয়): He has no relation with his kith and kin.
Lion’s share (বড় মাপের অংশ): He took the lion’s share of the profit.
Turn over a new leaf (begin a new phase of life, নবজীবন শুরু করা) —After his failure he turned over a new leaf.