Marginal utility : প্রান্তিক উপযোগ;
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Appropriate Prepositions
Acceptable to(গ্রহণযোগ্য): Such behavior is just not acceptable in this school.
Argue with, about(কথা কাটাকাটি করা): They always argue with me about tiny matter.
Complain to (কারো কাছে নালিশ করা): You should not complain to his parents.
Convinced of (আশ্বস্ত): You are convinced of his product.
Send for (ডেকে পাঠানো): Send for a doctor immediately.
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Idioms
As a rule (নিয়ম অনুসারে.) As a rule, she kept silent in the meeting.
Bring to book (reproach-Start- ভর্ৎসনা করা) The father brought his son to book for his failure in the exam.
Breathe one’s last (decease, die- শেষ নিঃশেষ ত্যাগ করা, মরে যাওয়া) The man breathed his last in his native village.
Read between the lines (understand the significance, অন্তনিহিত অর্থ বুঝা) Try to read between the lines of the letter.
Up to (পর্যন্ত) - I have done the exercises up to page 40.