I (be) was were( was, were ) a good student.
We (be) were was( were, was ) old friends.
He (be) was were( was, were ) a doctor.
The pencil (not be) wasn't weren't( wasn't, weren't ) on the desk.
The sky (not be) wasn't weren't( wasn't, weren't ) clear.
The child (be) was were( was, were ) in the garden.
The children (be) were was( were, was ) in the garden.
It (be) was were( was, were ) a pleasant day.
The dog (be) was were( was, were ) hungry.
My dad (be) was were( was, were ) sick yesterday.
My friends (be) were was( were, was ) in Europe.
We (be) were was( were, was ) tired last night.
You (not be) weren't wasn't( weren't, wasn't ) very serious.
The window (not be) was not were not( was not, were not ) closed.
Katherine (be) was were( was, were ) in the same class as Peter last year.