Quadrangle : চতুর্ভুজ সমতল ক্ষেত্র;
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Appropriate Prepositions
Count for(গণ্য বা বিবেচিত হওয়া): There can be no lasting peace without true democracy in which the people play a part and count for something.
Easy of (সরল): The teacher is easy of approach.
Hostile to (বিরোধী বা বিরূপ ভাবাপন্ন): Nobody is hostile to you.
Long for (আশা করা/কামনা করা): He longed for name and fame.
Shout at (চিৎকার করে ডাকা): Do not shout at your parents.
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Idioms
At home (proficient in — দক্ষ) The students of Bangladesh should be at home in Bangla.
At one’s elbow (near at hand — হাতের কাছে – adv.) His private secretary is always at his elbow.
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.
Backstairs influence (secret and illegal influence- গোপন এবং বে আইনী প্রভাব-n) He did not deseve the job, however, he got it by backstairs influence.
Pack up a quarrel (ঝগড়া মিটানো)— He packed up their quarrel.