Keep an eye on : নজরে রাখা; নজর রাখা; চক্ষুয় রাখা; চক্ষু দেত্তয়া;
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keep an eye on  keep on  See Words Also In
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Appropriate Prepositions
Authority over (কর্তৃত্ব, আধিপত্য): She has no authority over his growing daughters.
Convinced of (আশ্বস্ত): You are convinced of his product.
Repentant for (অনুতপ্ত): Kamal should be repentant for his misbehavior.
Sorry for (দুঃখিত): He is sorry for his misdeeds.
Stick to (দৃঢ়ভাবে লেগে থাকা): We should always stick to our decisions.
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Idioms
Dead against (তীব্র বিরোধী - strongly opposed to): I am dead against corruption.
Make head or tail – (মাথামুন্ডু বুঝা) – I cannot make head or tail of what you say.
Pros and cons (খুঁটিনাটি): You should consider the pros and cons of the system.
Safe and sound (নিরাপদে)— He reached home safe and sound.
Scapegoat (উদোর পিন্ডি বুধোর ঘাড়ে)—He was made scapegoat of the incident.