Difference between ので and て Form?


I've found this question across my JLPT N4 practice

> 1) 楽しかったですよ。参加（できなくて/できないので）、残念でしたね.

The answer is できなくて What are the differences between ので and て in usage for
reasonings?




The の simply adds an explanatory tone to the sentence.

> 今忙しいので、どうぞお先に行ってください。 (As I am) busy right now, please go on ahead.

But I think you're veering away from the original grammatical matter being
tested in your practice sentence. macraf is giving you a good hint.




The の simply adds an explanatory tone to the sentence.

> 今忙しいので、どうぞお先に行ってください。 (As I am) busy right now, please go on ahead.

But I think you're veering away from the original grammatical matter being
tested in your practice sentence. macraf is giving you a good hint.

