C'était trés bien
très jolie musique
"C'est très bien ici"
You don't, it's never a pleasure meeting somebody who's French.
"vous avez un corps magnifique"
Ses amies sont très polies.
Gracieuse dame (but it's very very old school)
you say 'agréable'.
i would say no, someone who isn't very nice might not respect, or treat you well. and someone who doesnt do well in school, but be able to use you to get better.
Vous êtez tres (good) bien or (beautiful) jolie
the school is ' l'école ' in French.
passe une bonne Saint-Valentin (very odd thing to say in France)