System of forces : বলশ্রেণি;
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Appropriate Prepositions
Apathy towards (অনাগ্রহ): The student has great apathy towards his studies.
Faith in (বিশ্বাস): I have no faith in him.
Rule over (শাসন করা): In the absence of the Parliament, the President rules over the country.
Short of (অপর্যাপ্ত): I am running short of money.
Shout at (চিৎকার করে ডাকা): Do not shout at your parents.
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Idioms
At all (in the least degree – মোটেও না) There is no water at all in the pond.
Lose heart (হতাশ হওয়া) — Do not lose heart in danger.
Pros and cons (খুঁটিনাটি): You should consider the pros and cons of the system.
Safe and sound (নিরাপদে)— He reached home safe and sound.
Worthy of (যোগ্য) - He is worthy of a good job.