Рабочий лист по теме a,an,some

Complete with a\an or some.
There is ball in the box.
There is boy on the playground.
There are children in the park.
There are pencils in the pencil box.
There is umbrella in the bag.
There are presents on the table.
There is cake in the kitchen.

Complete with is or are.
There three books on the desk.
There a window in the room.
There a woman in the boat.
There some stars in the sky.
There five tigers in the zoo.
There one flower in the vase.
There a bird in the nest.