Jackknife : বড় ছুরি;
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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.
Assure of(আশ্বাস দেওয়া): I can assure you of the Principal’s honesty.
Attention to(মনোযোগ): He has no attention to his studies.
Die by (দূর্ঘটনা বা অপঘাতে মরা/কোন কিছু দ্বারা মারা যাওয়া): He died by a road accident.
Look at (তাকানো): Students look at the blackboard.
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Idioms
As ill-luck would have it (unfortunately- দুর্ভাগ্যবশত) A child was born to them but, as ill-luck would have it, it died when it was eight days old.
Black sheep - (কুলাঙ্গার): Stay away from the Black sheep.
Pros and cons (খুঁটিনাটি): You should consider the pros and cons of the system.
See to (বিবেচনা করা)— Can you see to it that everyone gets a copy of this memo?
Short cut (সংক্ষিপ্ত পথ)— He comes by this shortcut.