Решение:
Заполняем пропуски правильной формой глагола "to be" в прошедшем времени:
- I was a postman two years ago.
- She was sad yesterday.
- They were students last year.
- He was a football player last summer.
- We were in London two days ago.
- Helen was funny five minutes ago.
- Ron and Harry were in the shop last Monday.
- I was sad yesterday.
Ответ: was, was, were, was, were, was, were, was.