There was/wasn't or there were/weren't

There were

There was

There was

There were

There are many children in the room yesterday.

There weren`t any children in the room yesterday.

There wasn`t any children in the room yesterday.

There were many animals in the zoo

There was many animals in the zoo

There were a bird in the tree

There wasn`t a bird in the tree

There was a bird in the tree

Were there

Was there

Was there

Were there

There wasn`t

There weren`t

There was

There were

There wasn`t

There were

There wasn`t

There was

There were many interesting things in the museum.

There was many interesting things in the museum.

There wasn`t many interesting things in the museum.

There weren't many interesting things in the museum.

There was a supermarket in the town twenty years ago.

There wasn`t a supermarket in the town twenty years ago

Was there a supermarket 20 years ago?

There weren`t supermarkets in the town.