A:黄海 东海
B:东海 南海
C:南海 黄海
D:东海 渤海
We don't have enough nurses to look after the patients. At least _____ are needed.
In the UK, schools often have Parents' Evenings. It is a time for teachers and parents to talk.
①东亚 ②西亚 ③南亚 ④中亚