PRESENT SIMPLE:

http://www.iessuel.es/portal/attachments/article/200/13-stage_3_13_present_simple_affirm_neg_questions_and_short.pdf

https://www.perfect-english-grammar.com/present-simple-exercise-7.htm

https://www.english-4u.de/en/grammar/present-simple.htm

https://www.ego4u.com/en/cram-up/tests/simple-present-1

https://agendaweb.org/verbs/present_simple-exercises.html


FREQUENCY ADVERBS:

https://www.englisch-hilfen.de/en/exercises/adjectives_adverbs/adverbs_of_frequency.htm