There ISN'T / AREN'T any chicken.
There ISN'T any chicken.
There ARE / AREN'T olives.
There AREN'T olives.
There is SOME / ANY spinach.
There is SOME spinach.
There aren't SOME / ANY onions.
There aren't ANY onions.
Can we count green peppers?
Yes, we can.
Can we count sweetcorn?
No, we can't.
There IS / ISN'T tuna.
There IS tuna.
There are some OLIVES / PRAWNS.
There are some PRAWNS.