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
Attain to (লাভ করা): He will not attain to his objective so soon.
Bare of(অনাবৃত, স্বল্প-সজ্জা): The trees of the forest are bare of leaves.
Competent for(যোগ্য): He is not competent for the post.
Descend on (আক্রমণ করা): Armed thieves descended on the helpless girl.
Loyal to (অনুগত): Every citizen must be loyal to the state.
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Idioms
Dead against (তীব্র বিরোধী - strongly opposed to): I am dead against corruption.
Irony of fate (ভাগ্যের পরিহাস): He could not succeed by irony of fate.
Make both ends meet (আয় ব্যয় মেলানো): I cannot make both ends meet with my small income.
To the letter (in all details, অক্ষরে অক্ষরে) —Follow my advice to the letter.
White color job – (উচ্চ শ্রেনীর চাকরি, যেখানে শারীরিক কাজ নেই বললেই চলে- a job without manual labour) - He wants a white color job.