https://wordwall.net/resource/59695
https://wordwall.net/resource/352597
https://agendaweb.org/exercises/verbs/to-be/past-simple-forms-2
https://agendaweb.org/exercises/verbs/to-be/past-simple-write-1
https://agendaweb.org/exercises/verbs/to-be/past-simple-write-2
https://agendaweb.org/exercises/verbs/to-be/past-negative-forms-write
https://agendaweb.org/exercises/verbs/to-be/past-simple-yes-no-questions
https://agendaweb.org/exercises/verbs/to-be/past-simple-test-1
https://www.liveworksheets.com/worksheets/en/English_as_a_Second_Language_(ESL)/Verb_to_be/Am_-_Is_-_Are-_Was_-_Were_jq21324vn