VERB TO BE (PAST)
Present: She is a very happy girl
Past: She was a very happy girl
Present: They aren't in Newcastle
Past: They weren't in Newcastle
Present: Are you interested in Maths?
Past: Were you interested in Maths?
And now time to practise:
exercise 1
exercise 2
exercise 3
exercise 4
exercise 5
exercise 6
exercise 7