1.Out engineers (was, were) at the factory yesterday.
2.When (was, were) you a student ?
3.Out children (was, were) not at school yesterday. It (was, were) Sunday.
4.Who (was, were) your English teacher at school ? -Mr. Sedov (was, were).
5.My friends (was, were) in Kiev three years ago.
6.Where (was, were) Mr. Petrov at 9 o'clock yesterday ?
7.My friend (was, were) not at his office last week. He (was, were) not well.
8.Who (was, were) at the lesson yesterday ? They (was, were).