Yleispreesens ja imperfekti vs kestopreesens /kestoimperfekti: nettiharjoituksia - present simple and past simple vs present continuous and past continuous

Yleispreesens vs kestopreesens nettiharjoituksia

http://www.englishpage.com/verbpage/verbs1.htm

http://www.perfect-english-grammar.com/present-simple-present-continuous-1.html

https://elt.oup.com/student/solutions/preint/grammar/grammar_01_012e?cc=fi&selLanguage=en

Yleisimperfekti vs kestoimperfekti

https://www.perfect-english-grammar.com/past-simple-past-continuous-exercise-1.html

https://www.perfect-english-grammar.com/past-simple-past-continuous-exercise-2.html