Counterintelligence : প্রতিগোয়েন্দাপলিশ;
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Appropriate Prepositions
Creep up (বৃদ্ধি পাওয়া): The prices of are creeping up day by day.
Derive from (উৎসারিত হওয়া): The one has been derived from the poem.
Hinge on/upon (নির্ভর করা): The whole matter hinges upon this clue.
Look at (তাকানো): Students look at the blackboard.
Match for (প্রতিদ্বন্দ্বী): He is no match for me.
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Idioms
Backstairs influence (secret and illegal influence- গোপন এবং বে আইনী প্রভাব-n) He did not deseve the job, however, he got it by backstairs influence.
In a fix (মুশকিলে পতিত হওয়া): The man is in a fix with his new hairstyle.
In vogue (চালু): This custom is not in vogue at present.
Slip of the pen (লেখায় অসতর্কতাবশত সামান্য ভুল): The mistake is due to a slip of the pen.
Weal and woe (সুখ-দুঃখ): Human life is full of weal and woe.