1 They weren't rich before
2 He wasn't at the bus stop three hours ago.
3 It wasn't windy this afternoon.
4 You weren't at the museum last Tuesday.
5 There weren't bikes by the tree yesterday.

1 They were rich before.
They weren't rich before.
2 He was at the bus stop three hours ago.
He wasn't at the bus stop three hours ago.
3 It was windy this afternoon.
It wasn't windy this afternoon
4 You were at the museum last Tuesday.
You weren't at the museum last Tuesday
5 There were bikes by the tree yesterday.
There weren't bikes by the tree yesterday