Invigilator : তত্ত্বাবধায়ক,যিনি পরীক্ষার্থীদের ওপর নজর রাখেন
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Appropriate Prepositions
Careless of(অসতর্ক): Do not be careless of your health.
Die by (দূর্ঘটনা বা অপঘাতে মরা/কোন কিছু দ্বারা মারা যাওয়া): He died by a road accident.
Indispensable to (অত্যাবশ্যকীয়): Your help is indispensable to him.
Loyal to (অনুগত): Every citizen must be loyal to the state.
Smile on/upon (অনুগ্রহ করা): Fortune smiles on/upon the brave.
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Idioms
At ease (in peace or pleasure – শান্তিতে বা আরামে) A man who has enemies can not live at ease.
End in smoke (ব্যর্থ হওয়া): All his plans ended in smoke.
In full swing (পুরোদমে): The school is in full swing after the vacation.
Make hay while sun shines (ঝোপ বুঝে কোপ মারা) You should try to make hay while sun shines.
Seventh heaven – (মহাখুশী) – I was in the seventh heaven when I heard the news of my BCS final result.