Allergen : অতিপ্রতিক্রিয়া সৃষ্টিকারী বস্তু;
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Appropriate Prepositions
Alarm at, by, for(আশংকা করা/শঙ্কিত হওয়া): I was not alarmed at/by the news, but I was alarmed for their safety.
Care for(গ্রাহ্য করা): I do not care for you.
Concerned with(জড়িত): She was concerned with such things.
Conform to (নিয়মনীতি অনুসরণ করা): The employees have to conform to a strict dress code.
Effect of (প্রভাব): The effect of corruption is very harmful for our society.
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Idioms
At least (in the lowest estimate- কমপক্ষে) He is the owner of thirty lakh taka at least.
Easy and free (অমায়িক): The boy is easy and free, so he has many friends.
Gain Ground (সুবিধা পাওয়া): The wise are said to gain the ground in the long run.
Pack up a quarrel (ঝগড়া মিটানো)— He packed up their quarrel.
Show good manner (ভালো আচরণ প্রদর্শন ): You should show good manner in the company of young ladies.