Source: teacher Ljubica
Source: teacher Ljubica
Here are a few additional practice quizzes. Click on the links and do the online quizzes.
http://www.ego4u.com/en/cram-up/tests/simple-present-2
http://www.usingenglish.com/quizzes/65.html
http://www.englisch-hilfen.de/en/exercises/tenses/simple_present_mix.htm
http://www.englisch-hilfen.de/en/exercises/tenses/simple_present_mix2.htm