https://www.perfect-english-grammar.com/so-and-such-exercise-1.html

https://www.englishpage.com/minitutorials/sosuchexercise.htm

https://www.englishalex.com/post/how-to-use-so-and-such-in-english-rules-and-common-word-combinations-audio-included

https://www.englishgrammar.org/so-vs-such-esl-grammar-exercises/

https://test-english.com/grammar-points/b1/so-such-such-a-so-much-so-many/