GEP 3 - Relative Pronouns in Adjective Clause

I have some friends ..... are shopaholics.

My mom gave me piggy bank ..... is not pink.

I love to go to shops ...... give big discounts.

Katie is a person ..... can't resist sale at malls.

Do you know the author ..... wrote that book for teens about saving money?

Do you have a friend ..... can't say 'no' to people who try to sell him/her stuff?

My mom uses her credit card to buy clothes ..... make her look really good.

It's a shop ..... sells things at big discounts.