患者右上第一中切牙扭转近90°，且伴有唇侧倾斜，牙髓正常，牙根长大，牙槽骨轻度吸收，牙龈红肿，探易出血。

如果选择桩冠修复，则此牙根充后桩冠开始的最早时间可能是

A．根充后第二天

B．根充二天后

C．根充一周后

D．根充两周后

E．根充一个月后

When the soldier _____ his shirt, he discovered that his arms were black and blue.

A．took on

B．took over

C．took in

D．took off