KET 

Students Here you have a set of websitesfor practicing past simple Vs Past Continuous

https://www.ego4u.com/en/cram-up/grammar/simpas-paspro/exercises

https://www.ego4u.com/en/cram-up/grammar/simpas-paspro/exercises?ex02

https://www.ego4u.com/en/cram-up/grammar/simpas-paspro/exercises?ex05

https://www.ego4u.com/en/cram-up/grammar/simpas-paspro/exercises?ex06

https://elt.oup.com/student/englishfile/intermediate/a_grammar/file01/nef_int_grammar01_b01?cc=us&selLanguage=en