С.
underline the correct words.
1) new york is the most exciting/the most excitingest city i know.
2) nothing is worse/worst than missing a flight because of the traffic.
3) it's getting each time more/more and more common to make calls over the net.
4) what! €600! that's a lot of money. it's more/most expensive than i expected.
5) €500 is a lot, but i knew it would cost that. it's/lt isn't as expensive as i expected.
6) only €400! that's good. it's/lt isn't as expensive as i expected.