There is a dog in the yard.
There is a bed in the bedroom.
There is a car on the road.
There is food on the plate.
There is a person in the woods.
There are dogs in the yard.
There are beds in the bedroom.
There are cars on the road.
There are foods on the plate.
There are people in the woods.
There was is for singular
There was a chair in the living room.
These wasn't a bathroom in the mall
Was there a computer in that classroom?
There were is for plural
There were (some,many) chairs.
There were (some, many) good teachers in that institute.
There weren't (any, many) apples in the fridge.
Were there (any, many) books on the desk?