Upstream : স্রোতের প্রতিকূলে;
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Appropriate Prepositions
Aim at(আঘাত করার জন্য লক্ষ্য স্থির করা): The hunter aimed at the tiger.
Delighted at/with (আনন্দিত হওয়া): Sharmin was delighted at/with her husband’s promotion.
Easy of (সরল): The teacher is easy of approach.
Hinge on/upon (নির্ভর করা): The whole matter hinges upon this clue.
Loyal to (অনুগত): Every citizen must be loyal to the state.
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Idioms
At all (in the least degree – মোটেও না) There is no water at all in the pond.
At a discount (অনাদৃত) Female education is no longer at a discount now.
Birds of a feather (persons of like disposition-একই পর্যায়ের লোক) Bird’s of a feather flock together.
Hush money (ঘুষ): He offered a hush money to disclose the file.
Well off (স্বচ্ছল) - Jim and Della were not well off.