Past simple of the verb TO BE – WAS/WERE
https://agendaweb.org/verbs/to-be-past-exercises.html
Verbul To be la prezent – explicații, forme, exerciții.
There is/there are- theory and practice for beginners.
The forms of the verb to be for the present. Many exercises with all the forms: affirmative, interrogative and negative.
More practice with the verb to be: