There are therty kangerus.
There are thirty kangaroos.
Are there some jellifish?
Are there any jellyfish?
There aren’t some lezards.
There aren’t any lizards.
There are some monkees.
There are some monkeys.
Are there egty wolfes?
Are there eighty wolves?
There are any bears in Russia.
There are some bears in Russia.
There is some crokodiles in India.
There are some crocodiles in India.
There aren't some mouse.
There aren't any mice.