Explicação com vídeo: https://www.youtube.com/watch?v=SL3ciyAEcms

Link 1: https://test-english.com/grammar-points/b1/present-simple-present-continuous/

Link 2: http://www.vpssa.edu.rs/wp-content/uploads/2014/10/Present-Simple-vs.-Progressive-exercises.pdf

Link3: http://www.e-grammar.org/present-simple-continuous/test1-exercise1/