It's / They are
THEY ARE Korean cookies. // THEY ARE cookies.
There is a / There are some
THERE ARE SOME sandwich cookies. // THERE ARE some Oreos.
scout girls selling cookies
THERE ARE scout girls selling cookies.
It's / There is a (CHOCOLATE).
IT'S chocolate.
paper bag, not plastic bag
IT'S paper bag, not plastic bag.
people buying candies
THERE ARE people buying candies. // THERE ARE SOME people buying candies.
There is some / There are
THERE IS SOME bread.
There is / There are
THERE ARE A LOT OF lollipops. // THERE ARE lollipops.