Aikamuodot: yleis- vai kestomuoto?

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

yleisimperfekti /kestoimperfekti

http://www.english-grammar.at/online_exercises/tenses/past-simple-progressive3.htm

yleisimperfekti / kestoimperfekti ( past simple vs past progressive)

http://www.english-grammar.at/online_exercises/tenses/past-simple-progressive2.htm

yleisimperfekti /kestoimperfekti (advanced)

http://www.english-grammar.at/online_exercises/tenses/t077-present-perfect-simple-continuous.htm

yleisperfekti / kestoperfekti (present perfect simple or continuous)

http://www.english-grammar.at/online_exercises/tenses/present-perfect1.htm

yleisperfekti /kestoperfekti (pidempi harjoitus)