You are short on money these days. Both "short on" and "short of" can be used, but "short on" is more common for a temporary lack, while "short of" might imply a more severe or long-term lack.
I am short __________ money these days.
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Question context
This question is part of 🗣️ Verbal Ability within the broader 🧠 Aptitude Mastery subject and appears in the NTS National Testing Service preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.