Надо на писать 2 примера на
1) There is...
There are...
2) There isn't...
There aren't...
3) Is there...?
Are there...?

There is a book on the table/there are many trees in the street.There isn't a computer on the tableThere aren't people in the street.Is there a cat in the room?Are there dogs in the street?Можно вставить любые др. существительные в ед или мн. числе