"I was reading the dictionary. I thought
it was a poem about everything."
                     --Steven Wright

Appropriate Preposition:

  • Essential to ( অত্যাবশ্যক ) Food is essential to health.
  • Key to ( সমাধানের উপায় ) He has found out the key to his problem.
  • Require of ( প্রয়োজন হওয়া (কোন কিছু) ) I required a loan of him.
  • Die by ( মারা যাওয়া (বিষ) ) He died by poison.
  • Prevent from ( বারণ করা ; প্রতিরোধ করা ) I prevented him from going there.‌
  • Grateful to ( কৃতজ্ঞ (ব্যক্তি) ) I am grateful to you for your help.

Idioms:

  • Dead against ( তীব্র বিরোধী ) I am dead against his proposal.
  • At once back and call ( বাধ্য ) He is always at my back and call.
  • Fight shy ( এড়িয়ে চলা ) Why do you fight shy of your teacher.
  • At bay ( কোনঠাসা ) The tiger was at bay in the bush.
  • Pros and cons ( খুঁটিনাটি ) You should consider the Pros and cons of the system.
  • loose cannon ( অপ্রত্যাশিত ) He is a bit of a loose cannon.