Drainage system : জলনির্গমন-প্রণালী;
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Appropriate Prepositions
Attend to(মনোযোগ দেওয়া): Please attend to my advice.
Close to(নিকটে): Our College is close to the Post Office.
Die for (আত্নত্যাগ করা): Our Chairman died for our country.
Loyal to (অনুগত): Every citizen must be loyal to the state.
Rely on (নির্ভর করা): We should not rely on a lazy man.
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Idioms
End in smoke (ব্যর্থ হওয়া): All his plans ended in smoke.
For good (চিরদিনের জন্য): He left the house for good.
In a fix (মুশকিলে পতিত হওয়া): The man is in a fix with his new hairstyle.
Run a risk (ঝুকি নেয়া) — He ran a risk to save his life.
Seventh heaven – (মহাখুশী) – I was in the seventh heaven when I heard the news of my BCS final result.