1.
I was
You were
He/She/It was
We were
You were
They were
2.
was
were
were
was
was
was
were
were
3.
Mum wasn't at home this morning
Paul and Mary weren't in the shop
His friends weren't very happy yesterday afternoon.
I wasn't late for the cinema
We weren't at home to watch a film on TV.
4.
Yes, it was /No, it wasn't
Yes, they were / No, they weren't
Yes, he was / No, he wasn't
Yes, I was /No, I wasn't
