His wife died soon after gave birth to a son.
gave--giving
after是介词，后面接动名词。
以下应列为缓冲区的区域是（）
A.切牙乳突区
B.磨牙后垫区
C.后堤区
D.牙槽嵴顶
E.颊棚区
徐克导演的电影《青蛇》改编自作家（）的同名小说。
