Right arm : ডান হাত; বিশ্বস্ত সহকারী;
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Appropriate Prepositions
Abound in(প্রাচুর্যপূর্ণ হওয়া): Fish abounds in the pond.
Abound with(ছেয়ে থাকা): They live in a region that abounds with oil.
Aware of(অবগত): I am not aware of his dishonesty.
Guilty of (অপরাধী/দোষী): The convict was guilty of murder.
Yield to (নতি স্বীকার করা): I shall not yield to his temptation.
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Idioms
Fish in a troubled water (এলোমেলো অবস্থার সুযোগ নেয়া): He made a lot of money by fishing in a troubled water.
Null and void (বাতিল): The deed has been null and void now.
To the letter (in all details, অক্ষরে অক্ষরে) —Follow my advice to the letter.
Upper hand (প্রাধান্য) - He got the upper hand in the selection.
Widow’s mite (দরিদ্রের ক্ষুদ্র দান): A windows mite is no less important than a large contribution of a rich man.