Conversation so far:
What happened in 2008 to the South Korean band Kara?
South Korean band Kara was scheduled to have their comeback in March 2008 with their second album, however, Kim Sung-hee suddenly announced that she would be leaving the group.
why did Kim Sung-hee leave South Korean band Kara?
Kim Sung-hee suddenly announced that she would be leaving the group due to parental pressure because her participation in the group was contingent on the maintenance of her grades
did South Korean band Kara have a replacement for Kim Sung-hee?
Auditions were held, and the two new members were eventually revealed to be Goo Ha-ra and Kang Jiyoung

Question: what were the members?
Self-contained rewrite: what were the South Korean band Kara members that replaced kim sung-hee?