Yesterday:
A / an / 1 / one … NO -S (WAS)
2 or more / some / many / a few/ -s (WERE)
There was an orange and brown schoolbag next to the computer.
There was a book under the bin.
There was a blue and orange cap on the table.
There were three light green chairs.
There were three brown tables.
There were two pink walls.
Today:
A / an / 1 / one … NO -S (IS)
2 or more / some / many / a few/ -s (ARE)
There is a red book next to the computer.
There is a blue jacket in the bin.
There is an orange and blue cap under the table.
There is a computer on the table.
There are four red chairs.
There are three brown tables.
There are two yellow walls.