F5 Present simple

 https://agendaweb.org/exercises/verbs/present/affirmative-forms-2

https://agendaweb.org/exercises/verbs/present/affirmative-quiz 

https://agendaweb.org/exercises/verbs/present/third-person 

 https://web2.uvcs.uvic.ca/courses/elc/studyzone/330/grammar/pres1.htm

https://agendaweb.org/exercises/verbs/do-does-exercises/negative-1.htm 

https://agendaweb.org/exercises/verbs/present-negative 

https://agendaweb.org/exercises/verbs/present/do-does-1