ONLINE TESTY
https://www.helpforenglish.cz/article/2006030101-pritomny-cas-prosty-a-prubehovy
https://www.helpforenglish.cz/article/2006101101-pritomne-casy-v-anglictine-cviceni-2
https://www.helpforenglish.cz/article/2009111901-irregular-verbs-test-pre-intermediate-4
https://www.helpforenglish.cz/article/2009110501-irregular-verbs-test-pre-intermediate-3
https://www.ego4u.com/en/cram-up/tests/simple-past-1
https://www.ego4u.com/en/cram-up/tests/simple-past-2
https://www.ego4u.com/en/cram-up/tests/simple-past-3
https://www.ego4u.com/en/cram-up/tests/present-progressive-1
https://www.ego4u.com/en/cram-up/tests/present-progressive-2
https://www.ego4u.com/en/cram-up/tests/present-progressive-3
https://www.ego4u.com/en/cram-up/tests/simple-present-1
https://www.ego4u.com/en/cram-up/tests/simple-present-2
https://www.ego4u.com/en/cram-up/tests/simple-present-3