牙正畸移动的生理基础之一是牙槽骨（）

A.受压侧吸收

B.受压侧新生

C.受牵拉侧吸收

D.受牵位侧不变

E.受压侧不变

—You just think of yourself! You kept me wailing for at least three hours．

—I’ m sorry that you _____ think so．

A．would

B．should

C．could

D．might