Ответ:

  1. 31 John, whose brother is a clown, is throwing a costume party next week.
  2. 32 December 25th, when Christmas takes place, is also my parents' anniversary.
  3. 33 Perugia, where the Eurochocolate Festival is held every year, is a city in central Italy.
  4. 34 Lyn is the girl who is having the party on Friday.
  5. 35 The costume which George has chosen for the fancy dress party is very funny.