1.

-there is.....

- there are two.....

- there is a scarf...

- there are four...

- there are many.....

- there is a book

- there is a laptop......

there are some.....

2.

- Yes, there are

- no, there aren't

- yes, there is

- yes, there is

- yes, there are

- yes, there is

- no, there aren't

- no, there isn't