Allergen : অতিপ্রতিক্রিয়া সৃষ্টিকারী বস্তু;
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Appropriate Prepositions
Catch at(ধরা): A drowning man catches at a straw.
Cause for (চিন্তিত হওয়ার কারণ): He has never given me any cause for concern.
Conceal from(লুকানো) Do not conceal anything from me.
Faith in (বিশ্বাস): I have no faith in him.
Married to (বিবাহিত): Salma was married to a Govt. Officer.
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Idioms
Acid test (অগ্নি পরীক্ষা): You must succeed in the acid test of the time you live in.45
Burning question - (গুরুত্বপূর্ন বিষয়): Poverty problem is a burning question of our country.
For good (চিরদিনের জন্য): He left the house for good.
Make hay while sun shines (ঝোপ বুঝে কোপ মারা) You should try to make hay while sun shines.
Read between the lines (understand the significance, অন্তনিহিত অর্থ বুঝা) Try to read between the lines of the letter.