Hi

thanks so much for your help but I am confused-
I thought in the above it was there and these

however in this sentence:
Mike looked for the dogs, but there were none. -- I thought the pronoun was there but someone else answered and said it was none.

That someone -- Ms.Sue -- is correct. "There" is not a pronoun; it's an adverb. "None" is the pronoun in that sentence.

=)