French language Q&A Forum

Hi, I completed this sentence with 'n'est-ce pas' but it was marked incorrect. I'm confused. The correct answer given was 'n'est pas': I checked the attached lesson (to understand why my answer was incorrect) but I still I don't see why.

Elodie est très bonne actrice, ________ ?

or 'elle a les cheveux longs et blond'. I wonder if 2 of the following are correct also?

elle a des cheveux longs et blonds

elle a les longs cheveux blonds

Why did none of the answers for shoes size have the option pointure as a vocabulary choice?  I thought you weren't supposed to use taille with shoe sizes.