First hand knowledge : মৌল জ্ঞন;
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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.
Covetous of(লোভী হওয়া): He is covetous of wealth.
Innocent of (নির্দোষ): The maid servant was proved innocent of the alleged theft.
Look into (তদন্ত করা/অনুসন্ধান করা): I am looking into the matter.
Make from (কোনো উপকরণ দ্বারা সরাসরি তৈরী নয় বোঝাতে): Paper is made from bamboo.
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Idioms
At home (comfortable— আরাম) He feels at home in Dhaka now.
Bear in mind (মনে রাখা): Always bear in mind that you are a daughter of a reputed person.
Call to mind (স্মরণ করা): I cannot call to mind your cell number.
Out of date (সেকেলে): This fashion is out of date.
Worthy of (যোগ্য) - He is worthy of a good job.