Portcullis : লোহার শিকে তৈয়ারি কপাটবিশেষ;
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Appropriate Prepositions
Abound in(প্রাচুর্যপূর্ণ হওয়া): Fish abounds in the pond.
Answerable to (কারো কাছে জবাবদিহিতা করা): He is not answerable to anybody for his mistake.
Busy with(ব্যস্ত থাকা): Rahim is now busy with her homework.
Hanker after (আকাঙ্ক্ষা/লোভ করা): He hankers after riches.
Pleased with (সন্তুষ্ট): Shamim is pleased with all his employees.
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Idioms
As a whole (মোটের উপর, সম্পূর্ন এক মনে করে-adv.) Look at life as a whole and you will see that it is meaningful.
Fight shy (এড়িয়ে চলা): Why do you fight shy of your teacher?
Red letter day (স্মরণীয় দিন): The 16th December is a red letter day for us.
Run high (বেড়ে যাওয়া) —The price of everything has run high.
To and fro (hither and thither, এদিক ওদিক)-The man is walking to and fro.