Catoptrics : ক্যাটপ্টরিক্স;
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Appropriate Prepositions
Acquit of (অব্যাহতি দেয়া): The chief justice acquitted him of the charge of murder.
Busy with(ব্যস্ত থাকা): Rahim is now busy with her homework.
Cause of(কারণ): Industry is the cause of your success.
Concerned for (উদ্বিগ্ন): The parents are concerned for their growing children.
Contrary to(বিপরীত, পরিপন্থী): Students should not act contrary to the rules of discipline.
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Idioms
Bare word (শুধু মুখের কথা, স্বাক্ষী প্রমানহীন কথা-n) He believed your bare word and now he has been played false with.
Foul play (অসদাচারণ করা): We feared that he had met with foul play.
Lame excuse (বাজে ওজর): The lame excuse will not do.
Of course (অবশ্যই): Of course, you know what that meant.
Ups and downs (উত্থান পতন)- There is ups and downs in a man's life.