Those families are happy.
The books from these libraries are interesting.
Are these teeth or stones?
There were geese in the fields.
Some potatoes some eggs an apple some biscuits a banana some sugar
1.am
2.is
3.are
4.aren't (are not)
5.isn't (is not)
6.are
7.am или am not (не видно конца предложения, нужно смотреть по контексту)
Financial-more financial-the most financial
Strong-stronger-the strongest