Quadrivalent : চতুর্যোজী;
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Appropriate Prepositions
Admit into(প্রবেশ করতে দেওয়া): Only the selected people were admitted into the theater.
Creep up (বৃদ্ধি পাওয়া): The prices of are creeping up day by day.
Rebel against (বিদ্রোহ করা): The soldiers rebelled against the king.
Take pity on (দয়া করা): Take pity on the helpless people.
Yield to (নতি স্বীকার করা): I shall not yield to his temptation.
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Idioms
At one’s elbow (near at hand — হাতের কাছে – adv.) His private secretary is always at his elbow.
Cut a sorry figure (খারাপ ফল করা): He cuts a sorry figure in the examination.
Round the clock (সমস্ত দিন): He is working round the clock.
Run short (কমতি পড়া) —I ran short of money.
Speed money (ঘুষ; উৎকোচ): He hankers after speed money.