Portcullis : লোহার শিকে তৈয়ারি কপাটবিশেষ;
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Appropriate Prepositions
Abide by(মেনে চলা): We must abide by the rules of discipline.
Aware of(অবগত): I am not aware of his dishonesty.
Consist in (কোনো কিছু মধ্য বিদ্যমান থাকা): Happiness consists in contentment.
Dependent on (নির্ভরশীল): Sepm is dependent on his father.
Heir of (উত্তরাধিকারী): He is the heir of his father.
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Idioms
All up with - (পুরোপুরি, হতাশ, সব আশা শেষ): If we can't, it's all up with the councillor.
Pass sth/sb off as sth/sb (মিথ্যা পরিচয় দেয়া; Pretend – ভান করা): They were trying to pass off these shirts as genuine Armani.
Stone’s throw (অতি নিকটে): Our school is at a stone’s throw from our house.
Tooth and nail (strongly, প্রবলভাবে)-He fought tooth and nail against his enemy.
Up to (পর্যন্ত) - I have done the exercises up to page 40.