Watch and ward : নগরে ও শহরে দিবসে ও রাত্রে প্রহরা;
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Appropriate Prepositions
Call in(ডাকিয়া আনা): They called in a doctor.
Dressed in (সজ্জিত, পরিহিত): The girl was dressed in silk.
Dull of (বধির; কানে শুনে না): He is dull of hearing.
Loyal to (অনুগত): Every citizen must be loyal to the state.
Point out (চিহ্নিত করা): Point out the mistakes from the book.
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Idioms
At all (in the least degree – মোটেও না) There is no water at all in the pond.
Gain Ground (সুবিধা পাওয়া): The wise are said to gain the ground in the long run.
To the brim (কানায় কানায়) - The river was full to the brim.
To meet trouble half-way (পুরোপুরি মোকাবেলার আগেই হাল ছেড়ে দেয়া): He met trouble half way after getting the instructions.
Turn down (refuse, প্রত্যাখান করা) —He turned down my proposal.