Catoptrics : ক্যাটপ্টরিক্স;
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Appropriate Prepositions
Arrive at(উপস্থিত হওয়া, পৌছানো): The train arrived at Dhaka station on time.
Aware of(অবগত): I am not aware of his dishonesty.
Informed of (অবহিত): I was not informed of your misfortune.
Object to (প্রতিবাদ করা): Many people objected to the remarks of the leader.
Sad at (দুঃখিত): All his colleagues were very sad at his transfer from this place.
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Idioms
At the top of (শীর্ষে): The boy shouted at the top of his voice.
As ill-luck would have it (unfortunately- দুর্ভাগ্যবশত) A child was born to them but, as ill-luck would have it, it died when it was eight days old.
Hold water (ধোপে টেকা): This policy will not hold water in this situation.
Silver tongue (মিষ্টভাষী)- He is a man of silver tongue.
Steer clear of (avoid, দূরে থাকা)— You must steer clear of evil company.