park sang joon Whereas we can say #2, we can't say #1. Right. park sang joon So I was wondering why I can't say #1.
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park sang joonWhereas we can say #2, we can't say #1.Right.
park sang joonSo I was wondering why I can't say #1.The set phrase is 'in the act of'; 'in' does not work independently there.