9th exrcises

https://www.ecenglish.com/learnenglish/lessons/how-use-play-do-and-go/

https://englishlive.ef.com/es-es/blog/ingles-para-el-mundo-real/play-do-or-go/

http://www.learnenglishlanguagewell.com/2011/sports-play-do-or-go/

http://downloads.bbc.co.uk/worldservice/learningenglish/quiznet/pdfs/110_go_play_do.pdf

https://www.allthingsgrammar.com/do--go--play.html