christmas is a day when (most children like best )because they expect tobe given a present from santa claus.
when을 which/that로 바꾸라고 했는데
which/that이하 ()문장이 불완전이라서그런가요
그런데 이런 비슷한 경우에 when을 쓰지않던가요ㅠㅠ