In a kangarou English exam, one of the questions asked you to fill in a blank space in a sentence:
You are all ......... wonderful friends
What is more correct to use to fill in the blank space, "so" or "such"? According to the Cambridge Dictionary web page "Such or so?", from English Grammar Today, so is used when it is followed by an adjective and such is used when it is followed by a noun phrase.
The word wonderful, which follows the blank space, is an adjective, so I presume that the grammatically correct answer is so. However, my intuition is telling me otherwise.
In the above context, which is more correct, so or such?
Furthermore, can you please explain to me why the particular one is correct, as I believe that such a grammatical rule will help many people avoid syntax errors.