Panic button : জরুরি সংকেত-জ্ঞাপক বোতাম;
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Appropriate Prepositions
Angry for (কোন কাজে রাগান্বিত হওয়া): Rahim was angry with me for my having done this.
Burst into(কান্নায় ভেঙ্গে পড়া): He burst into tears.
Contribution to (অবদান): His invention made a major contribution to road safety.
Loyal to (অনুগত): Every citizen must be loyal to the state.
Penalty for, with (দণ্ড, জরিমানা): She has paid the penalty for the misuse of power with two years in prison.
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Idioms
Bring to light (disclose-প্রকাশ করা) The police brought the secret to light.
In cold blood (ঠান্ডা মাথায়): They committed this murder in cold blood.
In black and white – (লিখিতভাবে) – Put forward your proposal in black and white.
Slip of the pen (লেখায় অসতর্কতাবশত সামান্য ভুল): The mistake is due to a slip of the pen.
To the contrary (against what some one had said, পক্ষান্তরে) —He said nothing to the contrary.