Ответ:

Corrected Definitions:

  1. The season which/that is the warmest of the year.
  2. Someone who deliberately damages property.
  3. The period of your life when you change from being a child to being a young adult.
  4. An Asian country which/that is an island east of South Korea.
  5. An important test of your knowledge, especially one that/which you take at school.
  6. The woman whom your father marries in a second marriage.