SIMPLE PRESENT EXERCISES

https://www.ego4u.com/en/cram-up/tests/simple-present-1
http://www.englisch-hilfen.de/en/exercises/questions/simple_present.htm
http://www.englisch-hilfen.de/en/exercises/tenses/simple_present_mix.htm
http://www.really-learn-english.com/simple-present-exercises.html#01
http://www.really-learn-english.com/simple-present-exercises.html#05