Réponse:
1) My car is more comfortable than yours.
2) His car is faster than Mark's.
3) I am older than you.
4)He is more careful than his cousin.
5) je ne sais pas
6) The weather was not good yesterday but it's better today, the sun is shining.
7)London is not very beautiful, Paris is more beautiful.
8) je ne sais pas non plus dsl
(normalent c'est ça pour ce que j'ai mis après faudrai comparé avec d'autres personnes)