It was a long time before the Americans completely from the shadow of the September 11th

问题补充：

It was a long time before the Americans completely from the shadow of the September 11th attack launched by the terrorists.

A. healed

B. improved

C. cured

D. treated

答案：

(答案→)A. healed

B. improved

C. cured

D. treated

解析：考查动词：A. healed治愈，恢复，B. improved提高，C. cured治愈，D. treated治疗，句意：美国完全从恐怖主义者制造的9.11事件中恢复还要很长的时间。选A。