Imperfections : অসম্পূর্ণতা; অপূর্ণতা; অভাব; ত্রুটি;
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Appropriate Prepositions
Arrive at(উপস্থিত হওয়া, পৌছানো): The train arrived at Dhaka station on time.
Ask for (কোনো কিছু চাওয়া): Do not ask him for any help because he doesn’t like to help anyone.
Call for(চাওয়া): I will call for his explanation.
Look over (পরীক্ষা করা): He was looking over the answer scripts.
Rejoice at/in (আনন্দ করা): Everybody rejoiced at/in his success.
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Idioms
At times (মাঝে মাঝে): He at times comes here.
At the latest (খুব বেশি দেরী হলে) He will arrive here at 5 p. m. at the latest.
Bad bargain (purchasing at a high price-বেশি দামে কেনা-n) You had a bad bargain of the watch I see.
Call to mind (স্মরণ করা): I cannot call to mind your cell number.
On the whole (মোটের ওপর): On the whole, his conduct is good.