下颌第二磨牙萌出的一般时间段为
A．5～6岁B．7～8岁C．14～15岁D．9～10岁E．11～13岁
参考答案：E
---What’s the matter with your boyfriend?
---I can’t stand _____when he often ignores me and talks with other girls.
A．one
B．that
C．him
D．it
MTBE
